Granted Patent
Utility
US 4,203,321 · App. 05/869,661
Method and apparatus for testing hydraulic and pneumatic systems
Inventors:
Gerrard N. Vyse, Horise M. Cooke
Patented Case
View Patent ↗
Granted: May 20, 1980
Filed: Jan 16, 1978
Inventors
Gerrard N. Vyse
Horise M. Cooke
Assignee (at issue)
Stratoflex, 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.