Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-05-26
1983-12-06
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 95, D2303
Patent
active
D02717115
REFERENCES:
patent: 227171 (1880-05-01), Logan et al.
patent: 3190282 (1965-06-01), Bauer
patent: 4164931 (1979-08-01), Jenkins
Kemper Catherine E.
Lawton William C.
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