Spiral anchor backing plate

The utility model discloses a spiral anchor backing plate which comprises an anchor backing plate body, a first reinforcing plate and a second reinforcing plate are arranged in the anchor backing plate body, the inner side of the first reinforcing plate and the inner side of the second reinforcing p...

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Bibliographische Detailangaben
1. Verfasser: CAO XINQI
Format: Patent
Sprache:chi ; eng
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