Granted Patent
Utility
US 5,207,720 · App. 07/857,005
Hockey puck device
Inventor:
Charles G. Shepherd
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 25, 1992
Inventor
Charles G. Shepherd
Assignee (at issue)
Fortron International 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.