Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-09-30
1983-02-15
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 19, D12194, D2301
Patent
active
D02679680
REFERENCES:
patent: 1627324 (1927-05-01), Green
patent: 3949828 (1976-04-01), Frochaux
patent: 4294330 (1981-10-01), Baldwin et al.
patent: 4324314 (1982-04-01), Beach et al.
Beach Earl
Matle Calvin
Kemper Catherine E.
Ross Operating Valve Company
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