Granted Patent
Utility
US 4,769,621 · App. 07/086,712
Frequency divider with darlington transistors
Inventor:
Issy Kipnis
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Aug 18, 1987
Inventor
Issy Kipnis
Assignee (at issue)
Avantek, 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.