Granted Patent
Utility
US 4,074,702 · App. 05/752,056
Control valve for bleeding fluid actuator
Inventor:
Irwin M. Lewis
Patented Case
View Patent ↗
Granted: Feb 21, 1978
Filed: Dec 20, 1976
Inventor
Irwin M. Lewis
Assignee (at issue)
ACF Industries Incorporated
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.