Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-08-25
1980-09-16
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02569469
REFERENCES:
patent: D228657 (1973-10-01), Anderson
patent: D243180 (1977-01-01), Federico et al.
patent: D244531 (1977-05-01), Klingaman
patent: D247302 (1978-02-01), Federico
patent: D247366 (1978-02-01), Jones et al.
patent: 3685739 (1972-08-01), Vanier
patent: 3768734 (1973-10-01), Anderson et al.
patent: 4161288 (1979-07-01), McKinney
Campbell Paul R.
Pardo John
Largen James R.
The Procter & Gamble & Company
Witte Richard C.
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