Invalid transfer apparatus
作者： Effee E Forrest
DOI:
关键词:
摘要:
lens.org 参考文章(4)
George H White, Hem marker for skirts ,(1948)
Chisholm Effie, Bedside transfer stand ,(1953)
Melvin M Farmer, Invalid transfer device ,(1942)
Charles H Sparklin, Movable vacuum cleaner structure ,(1954)