Granted Patent
Utility
US 4,535,879 · App. 06/584,565
Control system for controlling the engagement of a pressure-operated actuator
Inventor:
Fred D. Sturges
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Feb 29, 1984
Inventor
Fred D. Sturges
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.