Granted Patent
Utility
US 4,885,851 · App. 07/139,857
Shoesole for golf shoe
Inventor:
William R. Peterson
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Dec 30, 1987
Inventor
William R. Peterson
Assignee (at issue)
Tretorn AB
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.