Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-11-29
1978-05-16
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02479141
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patent: D236620 (1975-09-01), Conti
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patent: 3515122 (1970-06-01), Andrews
patent: 3777735 (1973-12-01), Miller
patent: 3910251 (1975-10-01), Andrew
Hayhurst W. L.
Largen James R.
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