Granted Patent
Utility
US 4,590,966 · App. 06/604,505
Control-valve system and block for a fluid-operated cylinder-and-piston assembly
Inventors:
David S. Figueroa, Jorge A. P. Heredia
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Apr 27, 1984
Inventors
David S. Figueroa
Jorge A. P. Heredia
Assignee (at issue)
Vitro Tec Fideicomiso
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.