Granted Patent
Utility
US 4,521,714 · App. 06/447,141
Shielded electron beam guide assembly for flat panel display devices
Inventors:
Frank E. Vaccaro, John Kowalik, Jr.
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Dec 6, 1982
Inventors
Frank E. Vaccaro
John Kowalik, Jr.
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.