Granted Patent
Utility
US 4,282,502 · App. 05/875,303
Electromagnetic positioner
Inventor:
Robert D. Nicholson
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Feb 6, 1978
Inventor
Robert D. Nicholson
Assignee (at issue)
Koehring Company
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.