Individual holder
ZIMMERMAN EMIL F
4 granted patents·119 citations·filing 1975–1991
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0190US4850789AInterfacing lift hitchZIMMERMAN EMIL F·Filed 1987·Granted Jul 25, 1989·58 cites·17 claims
- 0273US5026247AInterfacing lift hitchZIMMERMAN EMIL F·Filed 1989·Granted Jun 25, 1991·29 cites·15 claims
- 0360US5169279AInterfacting lift hitchZIMMERMAN EMIL F·Filed 1991·Granted Dec 8, 1992·23 cites·8 claims
- 0444US4081092ATractor with lifting mechanism for mounting a bulldozer blade or the likeZIMMERMAN EMIL F·Filed 1975·Granted Mar 28, 1978·9 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →