Blackboard eraser duster

The utility model concerns a dust remover for blackboard cleaning belonging to culture and education device which consists a fixed orbit fixable under the blackboard, an aspirator movable on the orbit and a erasing-sucking device which is connected to the aspirator and has a erasing axletree driven...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LIANGMAN PAN
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES PERFORMING OPERATIONS TRANSPORTING WRITING OR DRAWING IMPLEMENTS
Online-Zugang:	Volltext bestellen
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