Granted Patent
Utility
US 6,834,574 · App. 10/336,264
Cylinder with optical position sensing device and method
Inventor:
Ulrich Neumann
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Jan 2, 2003
Inventor
Ulrich Neumann
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.