Granted Patent
Utility
US 5,000,442 · App. 07/481,169
Cross country ski exerciser
Inventors:
William T. Dalebout, Richard B. Ellis
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Feb 20, 1990
Inventors
William T. Dalebout
Richard B. Ellis
Assignee (at issue)
Proform Fitness Products, 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.