Method and apparatus for forming expansible envelope

Details Method and apparatus for forming expansible envelope Method and apparatus for forming expansible envelope

1975-06-11

1977-02-22

Coan, James F.

93 13, 93 35SB, B31B 2926

Patent

active

040086500

ABSTRACT:
An improved method and apparatus for taking a precut one-piece unitary blank and forming it into an expansible container and the like.

REFERENCES:
patent: 2903947 (1959-09-01), Weisshuhn
patent: 3198420 (1965-08-01), Hiersteiner
patent: 3552640 (1971-01-01), Young
patent: 3808768 (1974-05-01), Dobbs
patent: 3860164 (1975-01-01), Dworkin

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