Granted Patent
Utility
US 4,763,796 · App. 07/028,661
Gravity feed display systems and conversion means for obtaining same
Inventor:
Paul L. Flum
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Mar 20, 1987
Inventor
Paul L. Flum
Assignee (at issue)
Paul Flum Ideas, 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.