Granted Patent
Utility
US 4,494,247 · App. 06/334,872
Knee/elbow guard treated to increase durability and a process for producing same
Inventor:
Michael J. Kelly
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Dec 28, 1981
Inventor
Michael J. Kelly
Assignee (at issue)
Trace Athletic 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.