US PATENT SUBCLASS 700 / 85
.~.~ Positional (e.g., joystick)
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700 /
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DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS
1
DD
GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS
{15}
83
DD
.~ Having operator control interface (e.g., control/display console) {2}
85
.~.~ Positional (e.g., joystick)