Paper clip dispenser
作者： William A Treimann
DOI:
关键词: Computer science
摘要:
lens.org 参考文章(5)
Testi Nicholas, Blade dispensing magazine ,(1947)
Roland J Colton, Martial Jacques, Razor blade ejector pack ,(1945)
Edgar A Nelson, Single-edge blade dispenser ,(1948)
Edward H Vick, Paper clip applicator ,(1951)
Metal Ag Color, Maschine zum Zusammenklammern von Blättern. ,(1952)