Granted Patent
Utility
US 4,870,421 · App. 07/138,795
Regulating switch for transmitting modules in a phased array radar
Inventors:
William Peil, Donald W. Perkins
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Dec 28, 1987
Inventors
William Peil
Donald W. Perkins
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.