Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1993-12-15
1996-04-09
Lichtenstein, Lisa P.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23379, D23413
Patent
active
D03687724
REFERENCES:
patent: D297761 (1988-09-01), Shiraki
patent: 5184938 (1993-02-01), Harmsen
patent: 5320493 (1994-06-01), Shih et al.
Heating/Piping/Air Conditioning, Nov. 1974, vol. 46, No. 12, p. 85, fan wheel, bottom middle side of page.
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