Individual holder
CHAPIN PAUL D
2 granted patents·111 citations·filing 1978–1979
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
2 records- 0189US4232468ACombination breech-loading to muzzle-loading firearm converting device and projectile casingCHAPIN PAUL D·Filed 1979·Granted Nov 11, 1980·68 cites·6 claims
- 0281US4227330ABreech-loading to muzzle-loading firearm converting deviceCHAPIN PAUL D·Filed 1978·Granted Oct 14, 1980·43 cites·13 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →