Granted Patent
Utility
US 5,558,120 · App. 08/429,084
Vandalproof control stop cap
Inventor:
John R. Wilson
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Apr 26, 1995
Inventor
John R. Wilson
Assignee (at issue)
Sloan Valve 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.