Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-04-14
1980-03-25
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02545675
REFERENCES:
patent: D182029 (1958-02-01), Kirk
patent: D205168 (1966-06-01), Schreckengost
patent: D207360 (1967-04-01), Rawson, Jr.
patent: 4120615 (1978-10-01), Keem et al.
Largen James R.
Pastoriza Ralph B.
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