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Improvements in or relating to coupling means for affixing stand-pipes and the like to hydrants
Improvements in or relating to coupling means for affixing stand-pipes and the like to hydrants
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机译:用于将立管等固定在消防栓上的连接装置的改进或相关
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680,243. Locking nuts. MUNDELL, F. May 28, 1951 [Feb. 27, 1950], No. 4927/50. Class 89 (i) [Also in Group XXVIII) In a hydrant adaptor of the kind comprising a tubular member 1 having a round thread 2, and a standard thread 3 engaged by a ring 8 having bayonetfastening lugs 9, the ring is locked by an annular conical projection 10 thereon engaging a conical recess in a locknut 11. Specification 627,447 is referred to.
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