Assignee
CAMPBELL MARK D
US·3 granted patents·21 citations·filing 1991–2016
Top patents by PatentIndex Score
3 records- 0161US10488159B2Method, system and apparatus for implementing shooting sportsCAMPBELL MARK D·Filed 2016·Granted Nov 26, 2019·1 cites·11 claims
- 0248US5152391AHopper feed elevatorCAMPBELL MARK D·Filed 1991·Granted Oct 6, 1992·13 cites·13 claims
- 0343USD340637SDecorative door or cabinet knobCAMPBELL MARK D·Filed 1991·Granted Oct 26, 1993·7 cites·1 claims
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