Simple-supporting base screwing and anchoring type comb plate expansion and contraction device

The utility model discloses a simple-supporting base screwing and anchoring type comb plate expansion and contraction device. The expansion and contraction device comprises a fixed comb plate, a movable comb plate and water stop belts and is characterized in that the fixed comb plate and the movable...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HUANG GUIFU, FU RUOLIANG
Format: Patent
Sprache:eng
Schlagworte:
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