Granted Patent
Utility
US 4,451,217 · App. 06/284,128
Rotary fluid pressure device
Inventor:
Harvey C. White
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Jul 16, 1981
Inventor
Harvey C. White
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.