Granted Patent
Utility
US 4,255,092 · App. 05/948,213
Hydraulic variable-displacement axial piston pump having torque limitation
Inventors:
John A. Hudson, Nicholas A. James, Edward G. Morley
Patented Case
View Patent ↗
Granted: Mar 10, 1981
Filed: Oct 3, 1978
Inventors
John A. Hudson
Nicholas A. James
Edward G. Morley
Assignee (at issue)
Plessey Handel Und Investments AG
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.