(under subclass 13) Subject matter including two or more actuating structures together with a variable resistor each responsive to an independent stimulus or condition, which may be of the same or different type; or including a resistor whose element has the property of changing its resistance value particularly well in response to two or more independent conditions or stimuli applied thereto; or including a variable resistor whose element is responsive directly to a condition together with an actuator responsive to an independent condition.
