Granted Patent
Utility
US 4,491,055 · App. 06/317,429
Control of continuous reciprocation of a fluid power cylinder
Inventor:
William W. Dollison
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Nov 2, 1981
Inventor
William W. Dollison
Assignee (at issue)
Otis Engineering 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.