IP Library Granted Patent US 3,974,743
Granted Patent Utility
US 3,974,743 · App. 05/171,934

Fluid actuator for a rotating engageable friction device

Inventor: John S. Ivey
Patented Case View Patent ↗
Granted: Aug 17, 1976 Filed: Aug 16, 1971
Inventor
John S. Ivey
Assignee (at issue)
BorgWarner Inc.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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Quick Facts
Patent No.
US 3,974,743
App. No.
05/171,934
Filed
1971-08-16
Granted
1976-08-17
Kind
A