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An industrial process control system for use with complex processes having many variables to be controlled....
http://www.google.ca/patents/US4303973?utm_source=gb-gplus-share
Patent US4303973 - Industrial process control system
Industrial process control system
Robert A. Williamson, Jr. et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 4303973
Filing date
: 22 Jun 1979
Issue date
: 1 Dec 1981
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