Granted Patent
Utility
US 4,474,544 · App. 06/360,832
Rotary gerotor hydraulic device with fluid control passageways through the rotor
Inventor:
Hollis N. White, Jr.
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Mar 23, 1982
Inventor
Hollis N. White, Jr.
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.