Granted Patent
Utility
US 5,303,418 · App. 07/719,202
High isolation mixer
Inventors:
Joseph Staudinger, William B. Beckwith
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: Jun 21, 1991
Inventors
Joseph Staudinger
William B. Beckwith
Assignee (at issue)
Motorola, Inc.
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.