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Improvements in combined valve and coupling

申请公布号:GB383633(A)

申请号:GB19310011695

申请日期:1931.04.20

申请公布日期:1932.11.21

申请人:
NATHAN CHARLES HUNT

分类号:F16L37/127;F16L37/46

主分类号:F16L37/127

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