Granted Patent
Utility
US 4,301,930 · App. 06/078,190
Disk screen, modular disk assembly and method
Inventor:
William C. Smith
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Sep 24, 1979
Inventor
William C. Smith
Assignee (at issue)
RADAR, 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.