Granted Patent
Utility
US 4,248,134 · App. 05/945,262
Reset means for fluid control circuit
Inventor:
William J. Spivey, Jr.
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Sep 25, 1978
Inventor
William J. Spivey, Jr.
Assignee (at issue)
Caterpillar Tractor Co.
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.