Granted Patent
Utility
US 4,321,648 · App. 06/237,872
Over-current protection circuits for power transistors
Inventor:
Leonard Kaplan
Patented Case
View Patent ↗
Granted: Mar 23, 1982
Filed: Feb 25, 1981
Inventor
Leonard Kaplan
Assignee (at issue)
RCA Corporation
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.