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• Subject > Radio direction finders (remove)
• Rights > In copyright (remove)
• Format > patents (remove)

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• Mixed Materials (2)

• patents (2)
• notes (documents) (1)
• technical drawings (1)
• technical illustrations (images) (1)

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• Radio direction finders (2)
• Radio in aeronautics (2)
• Aids to air navigation (1)
• Lear Avia, Inc. (1)
• Lear Developments (1)
• Radio--Transmitters and transmission (1)

2 results

[William P. and Moya Olsen Lear Papers, Box 1, Folder 15; Box 209, Folder 1 - "Radio guidance system and blind approach system (WPL/30-1)," 1935 June - 1944 November] (Item)

Items from Box 1, Folder 15 and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, June 1935 to November 1944. Contains drafts, notes, and technical drawings for the radio guidance system and blind approach system (WPL/30-1) patent. Twenty total items.

[William P. and Moya Olsen Lear Papers, Box 18, Folder 2; Box 200, Folder 2 - "Radio direction finding system (Case 20-1)" -- patent application [RM files], 1940-1943] (Item)

Items from Box 18, Folder 2 and Box 200, Folder 2 of the William P. and Moya Olsen Lear Papers, circa 1940-1943. Contains documents and drawings related to the patent application of the radio direction finding system (Case 20-1). 24 total items.