Individual holder
WELCH ROBERT M
US·4 granted patents·91 citations·filing 1990–2014
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0182US5071115AExercise device for simulating walking and stair climbingWELCH ROBERT M·Filed 1990·Granted Dec 10, 1991·74 cites·12 claims
- 0266USD367675SEducational modelWELCH ROBERT M·Filed 1990·Granted Mar 5, 1996·13 cites·1 claims
- 0356US8720609B2Drill bit with continuously sharp edge cutting elementsWELCH ROBERT M·Filed 2008·Granted May 13, 2014·4 cites·17 claims
- 0451US9540884B2Drill bit with continuously sharp edge cutting elementsWELCH ROBERT M·Filed 2014·Granted Jan 10, 2017·0 cites·8 claims
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