Individual holder
TATUM DAVID M
US·3 granted patents·127 citations·filing 1987–1991
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0182US5009519ASealing assembly for relatively movable membersTATUM DAVID M·Filed 1988·Granted Apr 23, 1991·46 cites·35 claims
- 0282US4762189ASeal and seal shield assembly for rotary drill bitsTATUM DAVID M·Filed 1987·Granted Aug 9, 1988·45 cites·33 claims
- 0358US5251914ASealing assembly for relatively movable membersTATUM DAVID M·Filed 1991·Granted Oct 12, 1993·36 cites·40 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →