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Spacers for british patent no. 1,358,261
Spacers for british patent no. 1,358,261
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机译:英国专利No.6的垫片。 1,358,261
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摘要
A device for ensuring the spacing of form panels during the pouring of concrete walls including a spacing cone in the shape of a frustum of a cone provided with a wear resisting flange moulded around the larger base.
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