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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B64C25/32
characterised by elements which contact the ground or similar surface
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B64C25/34
wheeled type, e.g. multi-wheeled bogies
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B64C25/36
Arrangements or adaptations of wheels, tyres or axles in general
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