Granted Patent
Utility
US 4,389,936 · App. 06/207,884
Cleaning attachment for screen printer
Inventors:
David Jaffa, Sandor Szarka
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Nov 18, 1980
Inventors
David Jaffa
Sandor Szarka
Assignee (at issue)
Precision Screen Machines, 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.