Assignee
NORTH AMERICAN CAR CORP
5 granted patents·115 citations·filing 1980–1982
Top patents by PatentIndex Score
5 records- 0176US4484528ARailway hopper carNORTH AMERICAN CAR CORP·Filed 1981·Granted Nov 27, 1984·34 cites·24 claims
- 0270US4352331ARailway hopper carNORTH AMERICAN CAR CORP·Filed 1980·Granted Oct 5, 1982·26 cites·23 claims
- 0355US4353668AHopper bottom unitNORTH AMERICAN CAR CORP·Filed 1980·Granted Oct 12, 1982·24 cites·25 claims
- 0449US4484852AHopper bottom unitNORTH AMERICAN CAR CORP·Filed 1982·Granted Nov 27, 1984·13 cites·6 claims
- 0548US4360295ACombination gravity/pneumatic hopper bottomNORTH AMERICAN CAR CORP·Filed 1980·Granted Nov 23, 1982·18 cites·26 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →