Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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B62M
RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
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9/00
Transmissions characterised by use of an endless chain, belt, or the like
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B62M2009/002
Non-circular chain rings or sprockets
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