Assignee
CHANG CHEN CHING
1 granted patent·2 pending applications·3 citations·filing 1997–2018
Top patents by PatentIndex Score
3 records- 0138US2010175947A1Chainless transmission mechanism for bicycleCHANG CHEN-CHING·Filed 2009·Application pending·0 cites
- 0235US2020148296A1Foldable bicycle capable of being pushed easilyCHANG CHEN CHING·Filed 2018·Application pending·0 cites
- 0326USD401538SChainless transmission unit of a bicycleCHANG CHEN-CHING·Filed 1997·Granted Nov 24, 1998·3 cites·1 claims
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