Granted Patent
Utility
US 4,374,169 · App. 06/301,546
Abrasion resistant, reinforced screen panel member
Inventors:
Gregory A. Gryskiewicz, Raymond A. Koehler
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Sep 14, 1981
Inventors
Gregory A. Gryskiewicz
Raymond A. Koehler
Assignee (at issue)
UOP 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.