Granted Patent
Utility
US 5,336,631 · App. 08/067,192
Method of making and trimming ballast resistors and barrier metal in microwave power transistors
Inventors:
Paul A. Potyraj, Kenneth J. Petrosky, John A. Ostop
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: May 26, 1993
Inventors
Paul A. Potyraj
Kenneth J. Petrosky
John A. Ostop
Assignee (at issue)
Westinghouse Electric Company LLC
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.