Granted Patent
Utility
US 4,418,429 · App. 06/375,816
Mixer for use in a microwave system
Inventor:
Clayton Roberts
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: May 7, 1982
Inventor
Clayton Roberts
Assignee (at issue)
General Electric Company
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.