File:Patent for a Switch construction for signaling systems US1872395.pdf

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Patented Aug. 16, 1932 1,872,395 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF RACINE, WISCONSIN SWITCH CONSTRUCTION FOR SIGNALING SYSTEMS Application filed November 6, 1929. Serial No. 405,105.

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Description
English: Patented Aug. 16, 1932 1,872,395

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

Application filed November 6, 1929. Serial No. 405,105.
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Source

Patented Aug. 16, 1932 1,872,395 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF RACINE, WISCONSIN SWITCH CONSTRUCTION FOR SIGNALING SYSTEMS Application filed November 6, 1929. Serial No. 405,105.

https://patentimages.storage.googleapis.com/b2/dd/17/79616af10ba8ad/US1872395.pdf
Author Bornett L. Bobroff (15 Sep 1882 - 27 Dec 1945)

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