Granted Patent
Utility
US 4,837,550 · App. 07/047,112
Nichrome resistive element and method of making same
Inventor:
Charles T. Plough, Jr.
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: May 8, 1987
Inventor
Charles T. Plough, Jr.
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.