High and low temperature refrigeration systems with common defrosting means
United States Patent 3267689
Inventors:
Liebert, Ralph C.
Publication Date:
08/23/1966
Assignee:
Liebert, Ralph C.
Other Classes:
62/335, 62/282, 62/434
International Classes:
F25D21/00
US Patent References:
| 3024008 | Three-pipe air conditioning systems | | | |