Granted Patent
Utility
US 4,586,013 · App. 06/656,572
Proportional solenoid
Inventor:
Herbert L. Linkner, Jr.
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Oct 1, 1984
Inventor
Herbert L. Linkner, Jr.
Assignee (at issue)
KELSEY-HAYES-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.