Technological Safety Design, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5381141 Method and apparatus for warning other boats in the proximity of a water craft for towing water skiers and other persons to be towed that the water skier is down or the person is inactive in the waterExpiredSep 21, 93Jan 10, 95[G08B]
5003906 Apparatus and method for automatic operation of a bilge blowerExpiredDec 13, 89Apr 02, 91[B63J]

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