Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-06-02
1979-10-09
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
4231, D2301
Patent
active
D02531232
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patent: 3766576 (1973-10-01), Ancel
patent: 4143431 (1979-03-01), Goncalves
Largen James R.
Mugford David J.
The Drackett Company
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