Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-01-19
1984-01-10
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02721821
REFERENCES:
patent: D183855 (1958-11-01), Mooro
patent: D240231 (1976-06-01), Patton
patent: 2857095 (1958-10-01), Suarez Grau
patent: 3787142 (1974-01-01), Dupke
TV and Appliance Mart, section of Television Retailing, Mar. 1953, "Fresh'nd-Aire" item.
Fowler Paul E.
Madson Walter E.
Largen James R.
Northwest Environmental Systems, Inc.
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