Granted Patent
Utility
US 4,089,208 · App. 05/757,766
Pressure test fixture for pressurized containers
Inventors:
Nelson J. Franks, Thomas W. Gray, Ralph H. Whitney
Patented Case
View Patent ↗
Granted: May 16, 1978
Filed: Jan 7, 1977
Inventors
Nelson J. Franks
Thomas W. Gray
Ralph H. Whitney
Assignee (at issue)
Owens-Illinois Inc.
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.