Granted Patent
Utility
US 4,713,620 · App. 06/945,283
Dual signal amplitude modifying and combining apparatus
Inventors:
Ben R. Hallford, Karl R. Varian
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Dec 22, 1986
Inventors
Ben R. Hallford
Karl R. Varian
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.