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US07707791B2 Roofing method for self supporting roofing plate 失效
自支撑屋面板的屋顶方法

Roofing method for self supporting roofing plate
Abstract:
Self supporting roofing plate for pitched roofs having purlinless roofing construction is disclosed. This particular roofing plate allows for the rafters of the purlinless construction to be spaced apart as twice as allowed when using best known prior art products, thus significantly reduces costs and labor of the complete roofing construction.
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