Individual holder
PARKER DONALD O
US·4 granted patents·151 citations·filing 1988–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0182US5056644ACoin analyzer system and apparatusPARKER DONALD O·Filed 1989·Granted Oct 15, 1991·64 cites·12 claims
- 0268US5293980ACoin analyzer sensor configuration and systemPARKER DONALD O·Filed 1992·Granted Mar 15, 1994·37 cites·33 claims
- 0363US5226520ACoin detector systemPARKER DONALD O·Filed 1991·Granted Jul 13, 1993·33 cites·39 claims
- 0450US4926997AApparatus and method for restarting a coin operated device after expiration of timePARKER DONALD O·Filed 1988·Granted May 22, 1990·17 cites·18 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →