Granted Patent
Utility
US 4,913,616 · App. 07/313,917
Hydraulic implement regeneration system
Inventor:
Donnell L. Dunn
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Feb 23, 1989
Inventor
Donnell L. Dunn
Assignee (at issue)
J. I. Case 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.