Gas water heater
United States Patent 1691008

Inventors:
Griswold, Robert G.
Publication Date:
11/06/1928
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Assignee:
DOHERTY RES CO
Primary Class:
122/18.100
Other Classes:
122/19.200, 220/567.300, 220/62.200, 122/156
International Classes:
F24H1/18