Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-08-30
1979-09-25
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02530082
REFERENCES:
patent: D214270 (1969-05-01), Bonsack
patent: D216466 (1970-01-01), Armstrong et al.
patent: D227101 (1973-06-01), Primault
patent: D235105 (1975-05-01), Doman
patent: D244292 (1977-05-01), Ridgoway
patent: D244855 (1977-06-01), Doman
patent: 1445243 (1923-02-01), Spaleek
Friedman Alex
Largen James R.
Societe Generale de Fonderie
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