Granted Patent
Utility
US 4,233,912 · App. 06/032,415
Shelf standard
Inventor:
Irwin J. Ferdinand
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Apr 23, 1979
Inventor
Irwin J. Ferdinand
Assignee (at issue)
The Hirsh 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.