Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B60
VEHICLES IN GENERAL
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B60B
VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
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2360/00
Materials; Physical forms thereof
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B60B2360/14
Physical forms of metallic parts
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B60B2360/144
Tubes, i.e. being hollow
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B60B2360/1448
of irregular cross-section
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