Granted Patent
Utility
US 3,944,126 · App. 05/511,271
Container
Inventor:
Frank P. Richards
Patented Case
View Patent ↗
Granted: Mar 16, 1976
Filed: Oct 2, 1974
Inventor
Frank P. Richards
Assignee (at issue)
Phillips Petroleum Company
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.