Environment-friendly blackboard with automatic dust suction function

The environment-friendly blackboard with the automatic dust suction function comprises a blackboard concave support, two pairs of lifting blackboards, a support shaped like a Chinese character'ri 'and a supporting block shaped like a Chinese character'ri', the supporting block sh...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHENG HONGMEI, LU GUANWEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES CABINETS COFFEE MILLS DESKS DOMESTIC ARTICLES OR APPLIANCES DRAWERS FURNITURE GENERAL DETAILS OF FURNITURE HUMAN NECESSITIES OFFICE FURNITURE PERFORMING OPERATIONS SPICE MILLS SUCTION CLEANERS IN GENERAL TABLES TRANSPORTING WRITING OR DRAWING IMPLEMENTS
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