IP Library › Granted Patent US 5,142,822
Granted Patent Utility
US 5,142,822 · App. 07/750,185

Safety arrangement for automatic door operator

Inventor: Howard L. Beckerman
Patented Case View Patent ↗
Granted: Sep 1, 1992 Filed: Aug 26, 1991
Inventor
Howard L. Beckerman
Assignee (at issue)
Atlas Roll-Lite Door Corp.

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Quick Facts
Patent No.
US 5,142,822
App. No.
07/750,185
Filed
1991-08-26
Granted
1992-09-01
Kind
A