Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B64
AIRCRAFT; AVIATION; COSMONAUTICS
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B64C
AEROPLANES; HELICOPTERS
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31/00
Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft
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B64C31/028
Hang-glider-type aircraft; Microlight-type aircraft
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B64C31/036
having parachute-type wing
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