Inventor · disambiguated record

Chongchao Duan

Also filed as: DUAN CHONGCHAO

1 granted patent·0 citations·filing 2018–2018

4Inventor score

Technology areasD06F

Files withQINGDAO HAIER DRUM WASHING MACHINE CO LTD1

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1 record

0145US11236452B2Dual-drum washing machineQINGDAO HAIER DRUM WASHING MACHINE CO LTD·Filed 2018·Granted Feb 1, 2022·0 cites·10 claims

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