Granted Patent
Utility
US 4,498,071 · App. 06/431,274
High resistance film resistor
Inventors:
Charles T. Plough, Jr., Ralph D. Hight
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Sep 30, 1982
Inventors
Charles T. Plough, Jr.
Ralph D. Hight
Assignee (at issue)
Dale Electronics, 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.