Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-06-17
1985-07-16
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02797046
REFERENCES:
patent: D273324 (1984-04-01), Brownlee
patent: 2499384 (1950-03-01), Holm et al.
patent: 2521369 (1950-09-01), Holm et al.
patent: 3438742 (1969-04-01), Grunewald et al.
patent: 3825063 (1974-07-01), Cowans
patent: 3907028 (1975-09-01), Lawson
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