Dryer system for the prevention of frost in an ultra low...

Refrigeration – Processes – Circulating external gas

Reexamination Certificate

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Details

C062S271000

Reexamination Certificate

active

06990819

ABSTRACT:
A dryer system for frost prevention in an ultra low temperature freezer includes a passive port coupled to an air dryer apparatus.

REFERENCES:
patent: 5259896 (1993-11-01), Park et al.
patent: 5768897 (1998-06-01), Rainville et al.
patent: 6301907 (2001-10-01), McCollin et al.
patent: 6397620 (2002-06-01), Kelly et al.
patent: 6616735 (2003-09-01), Burban et al.
patent: 2003/0164091 (2003-09-01), Hill et al.

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