Granted Patent
Utility
US 4,683,399 · App. 06/278,528
Silicon vacuum electron devices
Inventor:
Sidney I. Soclof
Patented Case
View Patent ↗
Granted: Jul 28, 1987
Filed: Jun 29, 1981
Inventor
Sidney I. Soclof
Assignee (at issue)
Rockwell International 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.