Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-08-27
1982-10-05
O'Keefe, Veronica
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 9 5, 239 24, 239 31, 239 32, D2399
Patent
active
D02664518
REFERENCES:
patent: 920266 (1909-05-01), Carothers
patent: 1193055 (1916-08-01), Pratt
patent: 2028412 (1936-01-01), Roberge
patent: 2030289 (1936-02-01), Haws
patent: 3809315 (1974-05-01), Wright
Interiors, Jun. 1962, p. 152-193 Nest Egg.
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