Granted Patent
Utility
US 4,979,323 · App. 07/419,342
Front-loading display frame
Inventors:
Gregory J. Wenkman, Ferdinand F. Salzmann
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Oct 10, 1989
Inventors
Gregory J. Wenkman
Ferdinand F. Salzmann
Assignee (at issue)
Uniek Plastics, 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.