Granted Patent
Utility
US 4,369,983 · App. 06/200,877
Trailer with mass restraint
Inventor:
Leonard T. Charek
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Oct 27, 1980
Inventor
Leonard T. Charek
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.