Granted Patent
Utility
US 4,280,381 · App. 06/025,754
Film tray assembly for photographic film cutter
Inventors:
Armer J. Willenbring, Warren J. Osby, James W. Gausman
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Apr 2, 1979
Inventors
Armer J. Willenbring
Warren J. Osby
James W. Gausman
Assignee (at issue)
Pako Corporation
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.