Assignee

JOHNSON DAVID O

US·2 granted patents·25 citations·filing 1991–2003

Technology mixA63B1 B24B1

Top patents by PatentIndex Score

2 records

0160US5150547AOphthalmic lens prism blocking ringJOHNSON DAVID O·Filed 1991·Granted Sep 29, 1992·18 cites·2 claims
0256US7014600B2Overhead adjustable resistance exercise machineJOHNSON DAVID O·Filed 2003·Granted Mar 21, 2006·7 cites·19 claims

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