Granted Patent
Utility
US 4,416,573 · App. 06/291,709
Plow bolt
Inventors:
John A. Matalis, Richard L. Heinie, Duane E. Wegerer
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Aug 10, 1981
Inventors
John A. Matalis
Richard L. Heinie
Duane E. Wegerer
Assignee (at issue)
International Harvester 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.