Double-color pen (Chinese)
Free access
- New search for: ZHAO ZHIYUN
- New search for: ZHAO ZHIYUN
2021
- Patent / Electronic Resource
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Title:Double-color pen
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Additional title:一种双色笔
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Patent number:CN112918159
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Patent applicant:
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Patent family:
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Contributors:ZHAO ZHIYUN ( author )
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Publisher:
- New search for: Europäisches Patentamt
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Publication date:2021-06-08
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Type of media:Patent
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Type of material:Electronic Resource
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Language:Chinese
- New search for: B43K
- Further information on International Patent Classification
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Classification:
IPC: B43K IMPLEMENTS FOR WRITING OR DRAWING, Geräte zum Schreiben oder Zeichnen -
Source: