Heat seal machine

Details Heat seal machine Heat seal machine

1991-04-02

1993-10-26

Douglas, Alan P.

Machines not elsewhere specified

Packaging or wrapping

Vacuum or heat seal

Patent

active

D03407306

REFERENCES:
patent: D250340 (1978-11-01), Douglas
patent: 4004503 (1977-01-01), Dwyer
patent: 4172750 (1979-10-01), Givlic
patent: 4190485 (1980-02-01), Takeda et al.
patent: 4243470 (1981-01-01), Higashiguchi

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