IP Library › Granted Patent US 4,696,377
Granted Patent Utility
US 4,696,377 · App. 06/781,400

Brake system for drawworks

Inventors: Eugene Richardson, Norbert Brehm, Larry G. Null
Patented Case View Patent ↗
Granted: Sep 29, 1987 Filed: Sep 27, 1985
Inventors
Eugene Richardson
Norbert Brehm
Larry G. Null
Assignee (at issue)
LTV Energy Products Co.

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Quick Facts
Patent No.
US 4,696,377
App. No.
06/781,400
Filed
1985-09-27
Granted
1987-09-29
Kind
A