Granted Patent
Utility
US 4,389,231 · App. 06/268,611
Method for supplying fluid to a rotating tube
Inventor:
Fred P. Partus
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Jun 1, 1981
Inventor
Fred P. Partus
Assignee (at issue)
Western Electric Company, 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.