Granted Patent
Utility
US 5,553,902 · App. 08/274,294
Leak-proof coupling
Inventor:
Patrick J. Powers
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Jul 12, 1994
Inventor
Patrick J. Powers
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.