B
PERFORMING OPERATIONS; TRANSPORTING
B
PERFORMING OPERATIONS; TRANSPORTING
B64
AIRCRAFT; AVIATION; COSMONAUTICS
B64
AIRCRAFT; AVIATION; COSMONAUTICS
B64C
AEROPLANES; HELICOPTERS
B64C
AEROPLANES; HELICOPTERS
13/00
Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
13/00
Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers