Sewing machines' needle eyes threader
作者： Capelli Giuseppe
DOI:
关键词: Computer science
摘要:
lens.org 参考文章(3)
Herbert Wenz, Hermann Zink, Operating mechanism for needle threading devices ,(1954)
Edward J Herbst, Needle threaders for sewing machines ,(1957)
Max E Weber, Needle-threading mechanism for sewing machines ,(1948)