Granted Patent
Utility
US 4,170,308 · App. 05/847,670
Hydraulic function disconnect means
Inventor:
Richard Rogers
Patented Case
View Patent ↗
Granted: Oct 9, 1979
Filed: Nov 1, 1977
Inventor
Richard Rogers
Assignee (at issue)
Koehring 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.