Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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B62D
MOTOR VEHICLES; TRAILERS
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57/00
Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track
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B62D57/02
with ground-engaging propulsion means, e.g. walking members
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