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File:Patent for a Switch for signaling systems US1825991.pdf

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Original file (1,158 × 1,702 pixels, file size: 432 KB, MIME type: application/pdf, 4 pages)

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Description
English: Patented Oct. 6, 1931 1,825,991

UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF RACINE, WISCONSIN SWITCH FOR SIGNALING SYSTEMS

Application filed July 18, 1929. Serial No. 379,144.
Date
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Patented Oct. 6, 1931 1,825,991 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF RACINE, WISCONSIN SWITCH FOR SIGNALING SYSTEMS Application filed July 18, 1929. Serial No. 379,144.

https://patentimages.storage.googleapis.com/6a/0b/7b/3d92c210449829/US1825991.pdf
Author Bornett L. Bobroff (15 Sep 1882 - 27 Dec 1945)

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Patented Oct. 6, 1931 1,825,991 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF RACINE, WISCONSIN SWITCH FOR SIGNALING SYSTEMS Application filed July 18, 1929. Serial No. 379,144.

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