Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1995-06-19
1996-12-24
Lichtenstein, Lisa P.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23377, D23379
Patent
active
D03768457
REFERENCES:
patent: D69971 (1926-04-01), Schlepp
patent: D149039 (1948-03-01), Barre
patent: D281984 (1985-12-01), Nakao et al.
patent: D344810 (1994-03-01), Nelson
patent: D348512 (1994-07-01), Markwardt et al.
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