Lunch box

Details Lunch box Lunch box

1985-02-12

1986-12-23

King, Lloyd L.

Heat exchange

Heating and cooling

Heating and cooling of the same material

62457, 206545, 220428, F25B 2900

Patent

active

046306714

ABSTRACT:
A lunch box has a body, and a vessel filled with a freezable liquid so that the latter cools the interior of the body. Also heating element can be provided for heating the interiod of the body part.

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