Granted Patent
Utility
US 4,593,791 · App. 06/601,255
Automatic sequencing circuit for lift cylinders
Inventor:
Dean A. Matthews
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Apr 17, 1984
Inventor
Dean A. Matthews
Assignee (at issue)
Allis-Chalmers Corporation
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.