Granted Patent
Utility
US 5,937,466 · App. 08/589,115
Lugged ice axe head
Inventors:
Charles Brainerd, Kenneth D. Stone
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jan 19, 1996
Inventors
Charles Brainerd
Kenneth D. Stone
Assignee (at issue)
Black Diamond Equipment, LTD.
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.