Granted Patent
Utility
US 6,209,607 · App. 09/255,356
Conduit-making apparatus with a multiple diameter winding drum
Inventor:
George J. Foos
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Feb 23, 1999
Inventor
George J. Foos
Assignee (at issue)
The Lamson & Sessions Co.
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.