Granted Patent
Utility
US 5,259,288 · App. 07/953,686
Pressure regulating composite cartridge
Inventor:
Marlo K. Vatsvog
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Sep 28, 1992
Inventor
Marlo K. Vatsvog
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.