Granted Patent
Utility
US 4,163,585 · App. 05/879,082
Service and emergency trailer valve
Inventor:
John M. Ury
Patented Case
View Patent ↗
Granted: Aug 7, 1979
Filed: Feb 21, 1978
Inventor
John M. Ury
Assignee (at issue)
Wagner Electric Corporation
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.