Assignee
COLUMBIA MFG
US·5 granted patents·152 citations·filing 1974–1999
Top patents by PatentIndex Score
5 records- 0186US4873741ASliding door roller apparatusCOLUMBIA MFG·Filed 1987·Granted Oct 17, 1989·48 cites·16 claims
- 0280US3990183ASliding door assemblyCOLUMBIA MFG·Filed 1974·Granted Nov 9, 1976·35 cites·5 claims
- 0365US5979137ASecurity doorCOLUMBIA MFG·Filed 1997·Granted Nov 9, 1999·22 cites·2 claims
- 0459US4899493AReplaceable sliding door roller assemblyCOLUMBIA MFG·Filed 1989·Granted Feb 13, 1990·28 cites·13 claims
- 0549US7121004B1Method of fabricating security doorCOLUMBIA MFG·Filed 1999·Granted Oct 17, 2006·19 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when COLUMBIA MFG files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →