Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1997-10-29
1999-12-28
Lichtenstein, Lisa
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23411, 2304
Patent
active
D04182189
REFERENCES:
patent: D100690 (1936-08-01), Frisbie
patent: D344583 (1994-02-01), Hsu
patent: D391357 (1998-02-01), Chi
patent: 3787142 (1974-01-01), Dupke
patent: 5002462 (1991-03-01), Janisse
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