Granted Patent
Utility
US 4,501,442 · App. 06/468,812
Apparatus for supplying fluid to a rotating tube
Inventor:
Fred P. Partus
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Feb 22, 1983
Inventor
Fred P. Partus
Assignee (at issue)
AT&T Technologies Incorporated
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.