Granted Patent
Utility
US 4,907,813 · App. 07/249,491
Ice hockey skate blade
Inventor:
Kenneth Hall
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Sep 27, 1988
Inventor
Kenneth Hall
Assignee (at issue)
Canstar Sports Group 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.