Granted Patent
Utility
US 4,051,860 · App. 05/640,809
Valve control mechanism
Inventors:
Allyn C. Dowd, Habibur Rahman
Patented Case
View Patent ↗
Granted: Oct 4, 1977
Filed: Dec 15, 1975
Inventors
Allyn C. Dowd
Habibur Rahman
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.