B
PERFORMING OPERATIONS; TRANSPORTING
B
PERFORMING OPERATIONS; TRANSPORTING
B64
AIRCRAFT; AVIATION; COSMONAUTICS
B64
AIRCRAFT; AVIATION; COSMONAUTICS
B64U
UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
B64U
UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
B64U50/00
Propulsion; Power supply
B64U50/00
Propulsion; Power supply