CA1338221C
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Housing for a process controller
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US5279263A
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Cascaded steam temperature control applied to a universal pressure boiler
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US5339335A
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Method and apparatus for digitally processing and filtering signals in industrial control applications
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US5369386A
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Removable magnetic zero/span actuator for a transmitter
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Cover lock for pressure transmitter
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Method of performance improvement for an I/P servo
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US5282130A
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Method and apparatus for obtaining process characteristics in a self-tuning controller
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US5311556A
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Digital FSK transmitter receiver and method of operating same
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US5160807A
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Method for RFI/EMI protection of electronic circuitry
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US5068618A
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Apparatus for measuring differential impedances
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US5175678A
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Method and procedure for neural control of dynamic processes
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US5132916A
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Methodology for ph titration curve estimation for adaptive control
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US5164894A
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Method of data entry into a plant loop
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US5074987A
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Online energy flow measuring device and method for natural gas
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US5032976A
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System for modeling and control for delignification of pulping
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US5032977A
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System for modeling and control for delignification of pulping
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US5060132A
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Method of modeling and control for delignification of pulping
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CA2003821A1
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Process controller single memory chip shadowing technique
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US4990219A
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Apparatus for controlling the degree of cooking in a digester
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US4975067A
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Surface contact power connector
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