Granted Patent
Utility
US 4,248,449 · App. 05/728,297
Cantilever two piece ski
Inventor:
Whitney Wilhelmy
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Sep 30, 1976
Inventor
Whitney Wilhelmy
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.