Granted Patent
Utility
US 4,715,434 · App. 06/810,943
Fluid treatment pressure vessel with a disposable cartridge and valve therefor
Inventor:
Gabriel J. Rudavicius
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Dec 19, 1985
Inventor
Gabriel J. Rudavicius
Assignee (at issue)
Navistar International Transportation
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.