Granted Patent
Utility
US 4,396,502 · App. 06/359,318
Screening apparatus for a papermaking machine
Inventor:
Edgar J. Justus
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Mar 18, 1982
Inventor
Edgar J. Justus
Assignee (at issue)
Beloit Corporation
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.