Granted Patent
Utility
US 4,302,807 · App. 06/174,753
Controlled current base drive circuit
Inventor:
Sandor Mentler
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Aug 4, 1980
Inventor
Sandor Mentler
Assignee (at issue)
Burroughs, 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.