Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-02-07
1982-11-16
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02669439
REFERENCES:
patent: D2734 (1867-08-01), Vedder
patent: D5394 (1871-11-01), Scorer et al.
patent: D14492 (1883-12-01), Bascom et al.
Kemper Catherine E.
Mason & Porter Limited
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