Granted Patent
Utility
US 4,402,146 · App. 06/309,663
Running shoe sole with heel tabs
Inventors:
Rui Parracho, Kevin J. Crowley
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Oct 8, 1981
Inventors
Rui Parracho
Kevin J. Crowley
Assignee (at issue)
Converse 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.