Granted Patent
Utility
US 4,580,770 · App. 06/692,454
Sheet feeding apparatus and method
Inventors:
Gerald D. Warden, Kenneth A. Hams
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Jan 18, 1985
Inventors
Gerald D. Warden
Kenneth A. Hams
Assignee (at issue)
Bell and Howell, LLC
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.