Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-06-15
1978-05-30
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02480417
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patent: 2917244 (1959-12-01), Gould
patent: 3279701 (1966-10-01), Falk et al.
patent: 3884419 (1975-05-01), Geoffray
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