Granted Patent
Utility
US 4,549,136 · App. 06/482,344
Controlled susceptibility plugs
Inventor:
Albert P. Zens
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Apr 7, 1983
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.