Granted Patent
Utility
US 4,638,869 · App. 06/851,847
Bulldozer blade mounting and stabilizing arrangement
Inventors:
Michael J. Murphy, Kent D. Smith
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Apr 14, 1986
Inventors
Michael J. Murphy
Kent D. Smith
Assignee (at issue)
Caterpillar Inc.
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.