Swimming pool grab rail structure
作者： Paul D Prizler , David A Stanwood
DOI:
关键词:
摘要:
lens.org 参考文章(3)
Deenik Johan F, Eisses Jacob A, Device for connecting a block and two rods or tubes arranged at an angle to each other ,(1958)
Will G Kelley, Means for connecting electrical conductors ,(1926)
William O Baker, Grab rail construction ,(1958)