Granted Patent
Utility
US 4,945,818 · App. 07/296,517
Stroke indicator for air operated diaphragm spring brakes
Inventor:
Nathan C. Ware
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Jan 12, 1989
Inventor
Nathan C. Ware
Assignee (at issue)
Lear Siegler Truck Products Corp.
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.