Granted Patent
Utility
US 4,912,981 · App. 07/306,610
Sensor protection for a compressed air tank
Inventor:
James A. King
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Feb 6, 1989
Inventor
James A. King
Assignee (at issue)
J. I. Case 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.