Assignee
M & I DOOR SYSTEMS
CA·3 granted patents·146 citations·filing 1988–1997
Technology mixE06B3
Top patents by PatentIndex Score
3 records- 0182US5964270ARoll-up door with low friction edgesM & I DOOR SYSTEMS·Filed 1997·Granted Oct 12, 1999·92 cites·23 claims
- 0265US4976302AApparatus for opening and closing roll-up doorM & I DOOR SYSTEMS·Filed 1988·Granted Dec 11, 1990·34 cites·10 claims
- 0345US5170833ACompensating mechanism for variable speed roll-up doorM & I DOOR SYSTEMS·Filed 1991·Granted Dec 15, 1992·20 cites·16 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →