IP Library › Granted Patent US 5,340,182
Granted Patent Utility
US 5,340,182 · App. 07/941,233

Safety elevator

Inventors: Cornelis L. Busink, Johannes Wilhelmus Henricus van Rijzingen, David Mason
Patented Case View Patent ↗
Granted: Aug 23, 1994 Filed: Sep 4, 1992
Inventors
Cornelis L. Busink
Johannes Wilhelmus Henricus van Rijzingen
David Mason
Assignee (at issue)
Varco International, Inc.

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Quick Facts
Patent No.
US 5,340,182
App. No.
07/941,233
Filed
1992-09-04
Granted
1994-08-23
Kind
A