Ultra low-temperature freezer
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United States of America Patent
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Sep 22, 2020
Grant Date -
Jan 3, 2019
app pub date -
Sep 10, 2018
filing date -
Mar 11, 2016
priority date (Note) -
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Abstract
An ultra low-temperature freezer includes: a casing that includes an exterior body having a first side surface and a second side surface laterally facing each other, an interior body, a heat insulation material, an evaporator, and a polyurethane; a hinge that includes a first hinge piece and a second hinge piece, with the first hinge piece being attached to the second side surface; and an outer door that has a third side surface and a fourth side surface facing the third side surface, with the second hinge piece being attached to the fourth side surface. The outer door includes an inner surface and an outer face provided forward of the inner surface, a heat insulation material including a vacuum heat insulation panel provided to the inner surface side, and a polyurethane provided between the heat insulation material and the outer face.
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