Electricity-free environment-friendly blackboard eraser capable of automatically and circularly removing and depositing dust

The utility model discloses a power-free automatic circulation dust removal and deposition environment-friendly blackboard eraser which comprises an outer shell and an inner shell, the outer shell is located on the rear side of the inner shell, the inner shell is provided with a first cavity and a s...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	WANG WANLUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES CLEANING CLEANING IN GENERAL PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL TRANSPORTING WRITING OR DRAWING IMPLEMENTS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!