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
D02586835
REFERENCES:
patent: D238075 (1975-12-01), Harris
patent: 3487478 (1970-01-01), Harris
patent: 3915524 (1975-10-01), Langston
patent: 3943581 (1976-03-01), Reyes
patent: 4147596 (1979-03-01), MacFarlane et al.
Largen James R.
Lind John E.
W. & G. Sissons, Limited
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