Granted Patent
Utility
US 4,471,797 · App. 06/359,957
Hydraulic circuit breaker reset device
Inventors:
Ronald F. Cass, Shih Y. Sheng
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Mar 19, 1982
Inventors
Ronald F. Cass
Shih Y. Sheng
Assignee (at issue)
Parker-Hannifin Corporation
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.