Granted Patent
Utility
US 4,337,836 · App. 06/191,476
Bulldozer linkage
Inventor:
David H. Seaberg
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Sep 26, 1980
Inventor
David H. Seaberg
Assignee (at issue)
J. I. Case 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.