Granted Patent
Utility
US 4,289,977 · App. 05/914,863
CMOS Compatible bipolar drive circuit with protective clamp
Inventors:
Vernon B. Powers, Harry I. Crawford
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Jun 12, 1978
Inventors
Vernon B. Powers
Harry I. Crawford
Assignee (at issue)
E-Systems, 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.