Granted Patent
Utility
US 5,775,715 · App. 08/509,970
Piezoelectric damper for a board such as a snow ski or snowboard
Inventor:
James A. Vandergrift
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Aug 1, 1995
Inventor
James A. Vandergrift
Assignee (at issue)
K-2 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.