Granted Patent
Utility
US 4,580,772 · App. 06/575,379
Hopper and feeder apparatus and method
Inventor:
Warren D. Reinert
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Jan 30, 1984
Inventor
Warren D. Reinert
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.