Granted Patent
Utility
US 4,475,641 · App. 06/313,381
Double acting hydraulic accumulator for power shift transmission
Inventors:
Gerardus M. Ballendux, Stephen J. McCormick
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Oct 21, 1981
Inventors
Gerardus M. Ballendux
Stephen J. McCormick
Assignee (at issue)
Allis-Chalmers Corporation
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.