Granted Patent
Utility
US 4,452,656 · App. 06/407,970
Method and apparatus for making plastic screen panels
Inventors:
Henry E. Benson, Raymond A. Koehler
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Aug 13, 1982
Inventors
Henry E. Benson
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.