Light transmitting roof forming panel

作者: Harold S. Dunn

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参考文章(5)
Gustaf P Jones, Trailer wall construction ,(1953)
Carroll H Van Hartesveldt, Carl A Strand, Olloqui Valentine V De, Lightweight bathtub and production thereof ,(1952)
George R Meyercord, Method of producing translucent panels. ,(1910)
Lichtgarn James, Moving stairway panelling ,(1952)