Granted Patent
Utility
US 4,507,873 · App. 06/560,391
Apparatus for accurately establishing the sealing length of CRT envelopes
Inventor:
Randal Lee Berardi
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Dec 12, 1983
Inventor
Randal Lee Berardi
Assignee (at issue)
RCA 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.