Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Furnace
Patent
1984-11-28
1987-10-06
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Furnace
D23351, D23385
Patent
active
D02922282
REFERENCES:
patent: 3252508 (1966-05-01), Goettl
patent: 3277956 (1966-10-01), Hughes et al.
patent: 3865182 (1975-02-01), Blossom
Kemper Catherine E.
Shortley John L.
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