Novel multifunctional trunk puncher

The utility model discloses a novel multifunctional trunk puncher which comprises a puncher. The puncher adopts a hollow drill bit, the side opening of the drill bit is saw-toothed, a handle is mounted at the side opening of the drill bit, a spring is mounted in the drill bit, the spring is controll...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHU LIANG, KANG ZONGJIANG, GONG YAJUN, WEI SHUJUN, SHI BAOCAI
Format: Patent
Sprache:chi ; eng
Schlagworte:
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