Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1998-10-28
1999-11-16
Siegel, Mitchell
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
2399
Patent
active
D04166183
REFERENCES:
patent: Re27378 (1972-05-01), Lohn
patent: 2966150 (1960-12-01), Wiltshire et al.
patent: 3943900 (1976-03-01), Primrose
patent: 4167166 (1979-09-01), Varner et al.
patent: 4415507 (1983-11-01), Voliva
patent: 5619960 (1997-04-01), Spacing Block
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