SUNYEH
electric damper actuators for ventilating; electric control device for use in damper operations; electric regulator device for use in damper operations; electrical control mechanism use in conjunction with dampers for ventilating; electric control mechanisms for dampers for ventilating; electric regulator mechanisms for dampers for ventilating; electric damper actuators, namely, control devices used in ventilating ducts to discharge the smoke for fire-fighting system; electric actuators used ...
Registered · December 19, 2016 · 87272699 ·
