Granted Patent
Utility
US 4,839,611 · App. 07/164,817
Voltage controlled high-frequency attenuator
Inventor:
David H. Kukulinsky
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Mar 7, 1988
Inventor
David H. Kukulinsky
Assignee (at issue)
Digital Equipment 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.