Granted Patent
Utility
US 4,246,777 · App. 06/063,892
Test device for containers
Inventors:
Richard A. Birner, Arthur C. Einfalt
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Aug 3, 1979
Inventors
Richard A. Birner
Arthur C. Einfalt
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.