Granted Patent
Utility
US 5,897,305 · App. 08/694,101
Valve assembly for compressors
Inventor:
Gravatt K. Roddis
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Aug 8, 1996
Inventor
Gravatt K. Roddis
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.