Granted Patent
Utility
US 6,029,948 · App. 09/006,513
Valve assembly having floating retainer rings
Inventor:
Terry C. Shafer
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Jan 13, 1998
Inventor
Terry C. Shafer
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.