Granted Patent
Utility
US 4,922,639 · App. 07/190,065
Cart with advertising panels
Inventor:
Houston Rehrig
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: May 4, 1988
Inventor
Houston Rehrig
Assignee (at issue)
Rehrig International, 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.