English language teaching blackboard (English)
Free access
- New search for: HE JIA
- New search for: HE JIA
2015
- Patent / Electronic Resource
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Title:English language teaching blackboard
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Patent number:CN105196746
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Patent applicant:
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Patent family:
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Contributors:HE JIA ( author )
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Publisher:
- New search for: Europäisches Patentamt
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Publication date:2015-12-30
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Type of media:Patent
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Type of material:Electronic Resource
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Language:English
- New search for: B43L
- Further information on International Patent Classification
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Classification:
IPC: B43L Artikel zum Beschreiben oder zum darauf Zeichnen, ARTICLES FOR WRITING OR DRAWING UPON -
Source: