Granted Patent
Utility
US 4,474,399 · App. 06/424,811
Tire gripper
Inventor:
Michael L. Lauber
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Sep 27, 1982
Inventor
Michael L. Lauber
Assignee (at issue)
The Firestone Tire & Rubber 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.