Granted Patent
Utility
US 4,934,684 · App. 07/178,062
Sheet picking mechanism
Inventor:
Walter Gysling
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Apr 5, 1988
Inventor
Walter Gysling
Assignee (at issue)
National Computer Systems, 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.