U.S. federal trademark · Serial No. 72028811 · Reg. No. 0687191
CONTROLS-NAMELY, COMPUTING DEVICES USED IN PNEUMATIC MEASUREMENT OR CONTROL CIRCUITS FOR MANY PURPOSES, SUCH AS TO CONVERT A TRANSMITTED SIGNAL FROM A SQUARE FOOT FLOW METER INTO A LINEAR SIGNAL. TO MAINTAIN A RATIO BETWEEN TWO PNEUMATIC SIGNALS FOR FLOW RATIO CONTROL, TO MULTIPLY, DIVIDE OR SQUARE PNEUMATIC OUTPUTS, OR TO PROVIDE PRESSURE AND TEMPERATURE COMPENSATION ON TRANSMITTED FLOW SIGNALS
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