Drawing display device with flattening mechanism

The utility model provides a drawing display device with a flattening mechanism, which belongs to the technical field of architectural drawings and is provided with a display board, the display board is a square straight display board which is fixed together through an opening and closing mechanism,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: REN YOUQUAN, WANG DONGBO
Format: Patent
Sprache:chi ; eng
Schlagworte:
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