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[[File:Patent for a Signal switch construction for automotive vehicles US1984628.pdf|thumb|Patented Dec. 18, 1934 1,984,628 UNITED STATES PATENT OFFICE 1,984,628 SIGNAL SWITCH CONSTRUCTION FOR AUTOMOTIVE VEHICLES Bornett L. Bobroff, Racine, Wis. Application May 12, 1930, Serial No. 451,561 2 Claims. (Cl. 74-484)|left|698x698px]] |
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[[File:Patent for a Signal switch construction for automotive vehicles US1984628.pdf|thumb|Patented Dec. 18, 1934 1,984,628 UNITED STATES PATENT OFFICE 1,984,628 SIGNAL SWITCH CONSTRUCTION FOR AUTOMOTIVE VEHICLES Bornett L. Bobroff, Racine, Wis. Application May 12, 1930, Serial No. 451,561 2 Claims. (Cl. 74-484)|left|698x698px]] |
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[[File:Patent for a Signaling device US2005714.pdf|thumb|Patented June 18, 1935 2,005,714 UNITED STATES PATENT OFFICE 2,005,714 SIGNALING DEVICE Bornett L. Bobroff, Racine, Wis. Application August 8, 1929, Serial No. 384,319 3 Claims. (Cl. 177-329)|left|698x698px]] |
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[[File:Patent for a Signaling device US2005714.pdf|thumb|Patented June 18, 1935 2,005,714 UNITED STATES PATENT OFFICE 2,005,714 SIGNALING DEVICE Bornett L. Bobroff, Racine, Wis. Application August 8, 1929, Serial No. 384,319 3 Claims. (Cl. 177-329)|left|698x698px]] |
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[[File:Patent for a Signal light for automotive vehicles US2015917.pdf|thumb|Patented Oct. 1, 1935 2,015,917 UNITED STATES PATENT OFFICE 2,015,917 SIGNAL LIGHT FOR AUTOMOTIVE VEHICLES Bornett L. Bobroff, Racine, Wis. Application July 7, 1930, Serial No. 465,850 2 Claims. (Cl. 177-329)|left|698x698px]] |