Granted Patent
Utility
US 4,487,269 · App. 06/487,796
Dozer blade angle adjustment mechanism
Inventor:
Claude M. Frisbee
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Apr 22, 1983
Inventor
Claude M. Frisbee
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.