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• Item Type > Mixed Materials (remove)
• Subject > Lear Avia, Inc. (remove)

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• Mixed Materials (2)

• diagrams (1)
• mixed materials (1)
• patents (1)

• In copyright (2)

• Lear Avia, Inc. (2)
• Automatic Direction Finder (ADF) (1)
• Radio direction finders (1)
• Radio in aeronautics (1)

2 results

[William P. and Moya Olsen Lear Papers, Box 17, Folder 1; Box 209, Folder 2 - "Directional radio system (Case 17-2)" -- patent application [RM files], 1940] (Item)

Items from Box 17, Folder 1 and Box 209, Folder 2 of the William P. and Moya Olsen Lear Papers, circa 1940. Contains patent applications, technical drawings, notes, and photographs related to the directional radio system. Many of the documents were created by William P. Lear. 15 total items.

[William P. and Moya Olsen Lear Papers, Box 28, Folder 4; Box 200, Folder 4 - Direction finders -- patent copies and diagrams [L-I-2/RM files], 1926-1941] (Item)

Items from Box 28, Folder 4 and Box 200, Folder 4 of the William P. and Moya Olsen Lear Papers, circa 1926-1941. Contains patent copies and diagrams related to Lear direction finders. 26 total items.