QUALITY BOAT LIFTS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7090055 Boat lift brake apparatusExpiredMar 22, 04Aug 15, 06[B66B]
6848379 Adjustable boat lift stanchionExpiredMay 14, 03Feb 01, 05[B63C]
6709197 Large capacity boat liftExpiredJun 20, 02Mar 23, 04[B63C]
6640736 Synchronously driven, multiple cable boat liftExpiredJun 25, 02Nov 04, 03[B63C]
6543375 Solar powered boat liftExpiredDec 05, 01Apr 08, 03[B63C]
6408776 Synchronously driven, multiple cable boat liftExpiredOct 20, 00Jun 25, 02[B63C]
6230639 Single motor boat lift having horizontally and longitudinally driven cablesExpiredJun 01, 00May 15, 01[B63C]
5988941 Boat lift cable lock apparatusExpiredOct 14, 97Nov 23, 99[B63C]
5957623 Electrically insulated positive drive boat liftExpiredFeb 12, 98Sep 28, 99[B63F, B63C]
5915877 Positive drive boat liftExpiredJun 04, 97Jun 29, 99[B63C]
5833417 Adjustable clamping assemblyExpiredFeb 12, 97Nov 10, 98[F16B]

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