Granted Patent
Utility
US 6,652,360 · App. 09/864,446
Method and apparatus for creating a groove in a collector ring of an electrical device
Inventor:
David L. Cutsforth
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: May 25, 2001
Inventor
David L. Cutsforth
Assignee (at issue)
Cutsforth Products, 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.