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• Still Image (17)
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• Copyright undetermined (18)

• Lear Developments (18)
• Learadio (18)
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18 results

[Man using Learadio portable marker transmitter] (Item)

Photograph of a man using a Learadio portable marker transmitter in an open field, circa 1931-1939.Inscription: "First completely portable outer or inner marker transmitter for radio compass [illegible]."

[Learadio antenna reel] (Item)

Photograph of a Learadio antenna reel, circa 1939.Inscription: "Complete manual operated ant. reel with spring take-up fair-lead and [illegible]. / 1939."

[Learadio portable transceiver and travel case] (Item)

Photograph of a Learadio portable transceiver and travel case, circa 1931-1939.Inscription: "Portable transceiver for [illegible] use."

[Learadio loop antenna] (Item)

Photograph of a Learadio loop antenna, circa 1931-1939.

[People working in Lear Developments workshop] (Item)

Photograph of people working in the Lear Developments workshop, New York City, New York, circa 1933-1938. Electronic components, device casings, and a loop antenna are visible on the workbenches.Inscription on verso: "The Lear (1) Engineering Dept, (2) Lear Laboratory, (3) Complete stock of test apparatus and inventory, (4) 1/2 floor #4 125 W 17th St NYC. (Associated with Fred M. Link 1933-1938.)"

[People working in Lear Developments workshop] (Item)

Photograph of people working in the Lear Developments workshop, New York City, New York, circa 1933-1938. Machine tools and device casings are visible on the workbenches.

[Men using machine tools in Lear Developments workshop] (Item)

Photograph of two men using machine tools in the Lear Developments workshop, New York City, New York, circa 1933-1938.

[Advertisement poster for Learadio aircraft equipment] (Item)

Advertisement poster for Learadio aircraft equipment, circa 1931-1939.