Granted Patent
Utility
US 4,771,521 · App. 07/115,542
Method and device for dual positioning of a workpiece in a turning machine
Inventors:
Kenneth Smith, William H. Rupnik, Bryan L. Maxwell, Robert J. Kups
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Oct 28, 1987
Inventors
Kenneth Smith
William H. Rupnik
Bryan L. Maxwell
Robert J. Kups
Assignee (at issue)
Parker-Hannifin 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.