High and low temperature refrigeration systems with common defrosting means
United States Patent 3267689

Inventors:
Liebert, Ralph C.
Publication Date:
08/23/1966
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Assignee:
Liebert, Ralph C.
Primary Class:
Other Classes:
62/335, 62/282, 62/434
International Classes:
F25D21/00
US Patent References:
3024008Three-pipe air conditioning systems