Assignee
COLUMBIANA FOUNDRY COMPANY
3 granted patents·33 citations·filing 1970–1976
Technology mixB21B3
Top patents by PatentIndex Score
3 records- 0183US4034588AMethods of piercing and enlarging elongate metal members such as seamless tubesCOLUMBIANA FOUNDRY COMPANY·Filed 1976·Granted Jul 12, 1977·21 cites·5 claims
- 0243US3962897AMetal working apparatus and methods of piercingCOLUMBIANA FOUNDRY COMPANY·Filed 1970·Granted Jun 15, 1976·8 cites·4 claims
- 0342US4078412ASupport shoes and methods of supporting metal members such as seamless tubesCOLUMBIANA FOUNDRY COMPANY·Filed 1976·Granted Mar 14, 1978·4 cites·8 claims
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