Granted Patent
Utility
US 6,517,440 · App. 09/293,098
Plastic shafts with molded core and external feature
Inventor:
Robert D. Russell
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Apr 16, 1999
Inventor
Robert D. Russell
Assignee (at issue)
Xerox Corporation
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.