Letter to Mr. J. K. Whanger, Lawrence Scudder and Company, from Richard A. Marsen, Lear Developments, June 19, 1939. Provides a "general outline of the patent situation at Lear Developments." Seven typed pages and original folder labeled "L-r2 /…
Letter to William P. Lear from Richard A. Marsen, June 20, 1939. Recommends that the company take a more general tone when announcing and publicizing products in order to protect Lear Developments' patents. References an Associated Press release…
Items from Box 4, Folder 27 of the William P. and Moya Olsen Lear Papers, August 1939. Includes eight pages of handwritten notes and sketches related to "Blind approach by voice," an airplane landing system.
Items from Box 4, Folder 23; Box 200, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, February 1939 to March 1940. Contains notes and diagrams related to ADF-6 and ADF-7 automatic direction finders. 11 total items.
Items from Box 12, Folder 14 of the William P. and Moya Olsen Lear Papers, December 1939 to August 1944. Contains documents related to the corporate name change from Lear Developments to Lear Avia, including certified and Photostat copies of the…
Photograph of a Lear Developments BC-190-T5 radio transmitter, circa 1940. The verso inscription notes that this transmitter was developed for the U.S. Army Signal Corps and describes the device's components and specifications.Inscription on verso:…
Items from Box 1, Folder 2 of the William P. and Moya Olsen Lear Papers, January 5, 1941. Contains one typed letter to William P. Lear, President, Lear Developments, from Lieut. Gen. V. Cherep-Spiridovich, Proctor, Aeronautical Research Council.…