This is an old revision of this page, as edited by Bayoustarwatch (talk | contribs) at 23:09, 2 March 2024 (thumb|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.|left|700x700px). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
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