G07C 1/28

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
RE49550 Auxiliary shot clockSep 29, 20Jun 13, 23Not available
9921550 Collapsible chess clockDec 12, 16Mar 20, 18Not available
9555310 Sports scorekeeping system with integrated scoreboard and automatic entertainment systemSep 01, 15Jan 31, 17MAXX HOLDINGS, INC.
9498697 System for computing personal playing time in a team sportJun 27, 12Nov 22, 16KURU DIGITAL CREATIONS OY
9502018 Whistle play stopperJul 13, 15Nov 22, 16PROSPORTS TECHNOLOGIES, LLC
9348319 Chronograph mechanism and timepiece comprising the chronograph mechanismOct 29, 15May 24, 16SOCIÉTÉ ANONYME DE LA MANUFACTURE D'HORLOGERIE AUDEMARS PIGUET & CIE
5134565 Electronic scoring device for tennis competitionsMar 22, 91Jul 28, 92Not available