Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-08-20
1976-12-14
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02427060
REFERENCES:
patent: D22190 (1893-01-01), Baker et al.
patent: D186010 (1959-08-01), O'Brien
patent: D189334 (1960-11-01), Ernest
patent: D195078 (1963-04-01), Beinert
Glenny W. W.
Largen James R.
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