Reversed easy open ring tab
作者： John J Luviano
DOI:
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摘要:
lens.org 参考文章(3)
Frank J Schay, Container means having pull-off wall means ,(1967)
Edward Balocca Alfred, Philip Zundel Arthur, Plastisol coatings for easy-open container ends ,(1964)
George F Smyth, Can end with inseparable tear strip ,(1965)