Granted Patent
Utility
US 4,393,469 · App. 05/947,386
Process control apparatus
Inventor:
Raymond T. G. Boute
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Oct 2, 1978
Inventor
Raymond T. G. Boute
Assignee (at issue)
International Standard Electric 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.