Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-09-21
1987-06-09
Gandy, James M.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D34 29
Patent
active
D02902907
REFERENCES:
patent: 3777736 (1973-12-01), Van Der Waarj et al.
patent: 3841324 (1974-10-01), Kruiswijk
patent: 4016809 (1977-04-01), Austin
patent: 4548627 (1985-10-01), Landy
Chin Kay H.
Gandy James M.
Wymore Max L.
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