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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9/00
Wheels of high resiliency; , e.g. with conical interacting pressure-surfaces
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B60B9/02
using springs; resiliently mounted bicycle rims
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