Granted Patent
Utility
US 4,243,271 · App. 06/044,785
Hydraulic braking system
Inventor:
Robert M. Dwyer
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: May 31, 1979
Inventor
Robert M. Dwyer
Assignee (at issue)
Massey Ferguson Group Limited
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.