Granted Patent
Utility
US 4,445,923 · App. 06/454,513
Position sensing device
Inventor:
Donivan M. Shetterly
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Dec 30, 1982
Inventor
Donivan M. Shetterly
Assignee (at issue)
Owens-Illinois Inc.
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.