Granted Patent
Utility
US 4,394,010 · App. 06/286,338
Sheet feeder
Inventor:
Raymond A. Hogenson
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Jul 23, 1981
Inventor
Raymond A. Hogenson
Assignee (at issue)
Minnesota Mining and Manufacturing 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.