Granted Patent
Utility
US 4,909,402 · App. 07/216,122
Combination for shelfing system
Inventor:
Charles E. Highsmith
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Jul 7, 1988
Inventor
Charles E. Highsmith
Assignee (at issue)
Unarco Industries 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.