Granted Patent
Utility
US 4,697,231 · App. 06/747,661
Machine control system
Inventors:
Samuel G. Boytor, Jeffry Jurs
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Jun 21, 1985
Inventors
Samuel G. Boytor
Jeffry Jurs
Assignee (at issue)
F. J. Littell Machine 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.