Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-04-28
1981-03-24
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02586819
REFERENCES:
patent: D91696 (1934-03-01), Groenigor
patent: D187854 (1960-05-01), Dreyfuss
patent: 3576038 (1971-04-01), Dinks
Largen James R.
Lind John E.
W. & G. Sissons, Limited
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