Granted Patent
Utility
US 4,833,412 · App. 07/179,014
Double tuned circuit for distributed lumped capacitance observe coils
Inventor:
Albert P. Zens
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Apr 8, 1988
Inventor
Albert P. Zens
Assignee (at issue)
Varian, 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.