APPARATUS FOR ADJUSTING THE HEIGHT OF TEACHING TOOLS

A height controlling device for the instruments of education is provided to control the height of the instruments of education and rotate each male screw part at the same time by controlling the adjustment of one side male screw part. A height controlling device for a instruments of education compri...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SIN, YOUNG DUK, JUNG, EUN JA
Format:	Patent
Sprache:	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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