Box 4
Container
Contains 31 Results:
"Proposed corrugated cutter machine" -- specifications, report, and notes, 1939 March
File — Box: 4, Folder: 24
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1939 March
"Learadio 40 watt radio transmitter Model UT-6" and "Learadio aircraft transmitter-receiver combination Model T30-R3AB" -- brochures, undated (circa 1939)
File — Box: 4, Folder: 7
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
undated (circa 1939)
"Radio direction finder for aircraft Model L (Lear-O-Scope)" -- instruction manual, undated (circa 1931-1939)
File — Box: 4, Folder: 31
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
undated (circa 1931-1939)
AMR-1/AMRL-1 wiring diagram, 1939 August
File — Box: 4, Folder: 26
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1939 August
Lear Developments logo, undated (circa 1931-1939)
File — Box: 4, Folder: 9
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
undated (circa 1931-1939)
Learadio AMRL-1 marine radio direction finder, Learadio compass, Learadio T30 aircraft transmitter, Learadio R3 aircraft receiver -- brochures [RM files], 1937-1938
File — Box: 4, Folder: 3
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1937-1938
Letter to George Haller and Captain James DeArmond, Aircraft Radio Lab from Charles Rowe, Patents Section, Signal Corps. States patent serial number 309,411 for antenna reel mechanism filed and directs to keep serial number and filing date non-public. Includes patent copies [RM files], 1939 December - 1940 June
File — Box: 4, Folder: 20
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1939 December - 1940 June
"Blind approach by voice" -- notes and sketches [RM files], 1939 August
File — Box: 4, Folder: 27
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1939 August
Assorted notes and sketches, 1939 August, undated
File — Box: 4, Folder: 28
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1939 August, undated
King Edward and Hugo Eckener medallion bid from Advance Pressure Castings to Galvanic Art Studios [RM files], 1936 April 24
File — Box: 4, Folder: 14
Scope and Contents: Series I: Lear Developments
From the Series:
Series I: Lear Developments provides insight into one of WPL’s earliest companies, Lear Developments, whose main focus was aircraft radio development and production. The company was established in 1931 and continued through 1939, when it changed its name to Lear Avia Inc. The series includes materials from the lifespan of the company as well as collected items dating earlier and some items dated later due to the restructure.The series is broken down...
Dates:
1936 April 24
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