Assignee
MANGEL KARL
3 granted patents·31 citations·filing 1975–1977
Top patents by PatentIndex Score
3 records- 0150US4034275AOptical control system for elevatorsMANGEL KARL·Filed 1975·Granted Jul 5, 1977·11 cites·6 claims
- 0242US4015688AMaster door operator for vertically movable elevator gates and landing doorsMANGEL KARL·Filed 1975·Granted Apr 5, 1977·12 cites·12 claims
- 0339US4108283AMaster operator for vertically moving elevator car doorsMANGEL KARL·Filed 1977·Granted Aug 22, 1978·8 cites·10 claims
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