Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-06-08
1978-11-21
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02503441
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patent: 4032996 (1977-07-01), Sargent et al.
Antos John M.
Sargent Frank T.
Largen James R.
Thetford Corporation
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