Granted Patent
Utility
US 4,407,150 · App. 06/271,373
Apparatus for supplying and controlling hydraulic swaging pressure
Inventor:
John W. Kelly
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Jun 8, 1981
Inventor
John W. Kelly
Assignee (at issue)
Haskel Engineering & Supply 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.