Granted Patent
Utility
US 5,297,410 · App. 07/985,935
Method of manufacturing a multiple-walled tube
Inventor:
Robert W. J. Goff
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Dec 4, 1992
Inventor
Robert W. J. Goff
Assignee (at issue)
Bundy International Limited
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.