Granted Patent
Utility
US 4,332,424 · App. 06/094,383
Low disturbance track cleat and ice calk structure for firm or icy snow
Inventor:
James A. Thompson
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Nov 15, 1979
Inventor
James A. Thompson
Assignee (at issue)
De Lorean Manufacturing Company
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.