Assignee
CHANG CHEN-FEI
0 granted patents·3 pending applications·0 citations·filing 2005–2006
Top patents by PatentIndex Score
3 records- 0120US2007025045A1Demagnetizable electromagnetic door lockCHANG CHEN-FEI·Filed 2005·Application pending·0 cites
- 0212US2008129059A1LC Oscillation-Based Magnetic LockCHANG CHEN-FEI·Filed 2006·Application pending·0 cites
- 0311US2007046040A1Electronic lockCHANG CHEN-FEI·Filed 2005·Application pending·0 cites
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