Granted Patent
Utility
US 5,368,141 · App. 08/173,008
Displacement sensitive valve mechanism
Inventor:
William H. Clarke
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: Dec 27, 1993
Inventor
William H. Clarke
Assignee (at issue)
Ford Motor Company
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.