Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-12-15
1978-06-13
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2305
Patent
active
D02481626
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patent: 369184 (1887-08-01), Johanson
patent: 418316 (1889-12-01), Gathemann
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patent: 1530103 (1925-03-01), Booth
patent: 3540865 (1970-11-01), Papo
patent: 3759675 (1973-09-01), Lazarus et al.
Cavanaugh Genevieve S.
Largen James R.
Sheridan Philip H.
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