Correct seat of student's position of sitting

The utility model discloses a correct seat of student's position of sitting belongs to articles for daily use field, including the base, characterized by: be provided with the gear wheel through the bearing on the base, the meshing has second pinion and a set of first pinion on the gear wheel,...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	WANG DINGDONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CABINETS COFFEE MILLS DESKS DOMESTIC ARTICLES OR APPLIANCES DRAWERS FURNITURE GENERAL DETAILS OF FURNITURE HUMAN NECESSITIES OFFICE FURNITURE SPICE MILLS SUCTION CLEANERS IN GENERAL TABLES
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