Granted Patent
Utility
US 4,333,036 · App. 06/144,244
Anode foil holder for broad beam electron gun
Inventor:
Sherman R. Farrell
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Apr 28, 1980
Inventor
Sherman R. Farrell
Assignee (at issue)
RPC Industries
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.