Title:
Control circuit for hydronic system
United States Patent 3170630
Inventors:
Chadwick, Abraham B.
Publication Date:
02/23/1965
Export Citation:
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Assignee:
AMERICAN RADIATOR & STANDARD
Primary Class:
236/1B
International Classes:
F24D19/10; G05D23/275; F24D19/00; G05D23/275
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US Patent References:
2153382Zone heating system
2096626Electrical sequencing control