Chalk sleeve barrel

The utility model relates to a chalk of a teaching apparatus, in particular to an extractable chalk sleeve comprising a bracket, a base and a median bundle. The bracket is provided with a tray and extended downwards to form a double-screw bolt. The side of the double-screw bolt is provided with a le...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	TINGYU,XIANG YE
Format:	Patent
Sprache:	eng
Schlagworte:	BUREAU ACCESSORIES IMPLEMENTS FOR WRITING OR DRAWING PERFORMING OPERATIONS TRANSPORTING WRITING OR DRAWING IMPLEMENTS
Online-Zugang:	Volltext bestellen
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