Individual holder
ARMSTRONG DONALD R
3 granted patents·23 citations·filing 1997–2000
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0151USD434158SLadder step extenderARMSTRONG DONALD R·Filed 2000·Granted Nov 21, 2000·10 cites·1 claims
- 0245USD409765SLadder step extenderARMSTRONG DONALD R·Filed 1998·Granted May 11, 1999·7 cites·1 claims
- 0342USD390669SLadder step extenderARMSTRONG DONALD R·Filed 1997·Granted Feb 10, 1998·6 cites·1 claims
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