DescriptionPatent for a Switch construction for signaling systems US1872395.pdf
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.
Date
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.
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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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