Granted Patent
Utility
US 5,331,752 · App. 07/820,382
Skate with detachable shoe
Inventors:
Robert K. Johnson, Brennan J. Olson, Michel D. Arney, Jack Curley
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Jan 14, 1992
Inventors
Robert K. Johnson
Brennan J. Olson
Michel D. Arney
Jack Curley
Assignee (at issue)
Rollerblade, 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.