Portable heat sealing machine

Machines not elsewhere specified – Packaging or wrapping – Vacuum or heat seal

Design Patent

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Details

Design Patent

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D0597572

CLAIM:
The ornamental design for a portable heat sealing machine, as shown as described.

REFERENCES:
patent: D233066 (1974-10-01), Bair
patent: 3847712 (1974-11-01), Hubbard
patent: D249526 (1978-09-01), Kishida
patent: D301238 (1989-05-01), Makihara
patent: D342532 (1993-12-01), Deni
patent: 5352323 (1994-10-01), Chi
patent: D436970 (2001-01-01), Choi
patent: D454894 (2002-03-01), Chou
patent: D506214 (2005-06-01), Zepter
patent: D515601 (2006-02-01), Sholzberg et al.
patent: D536355 (2007-02-01), Levsen et al.
patent: D542315 (2007-05-01), Chang
patent: D579034 (2008-10-01), Chang

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