Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-04-13
1984-11-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02764555
REFERENCES:
patent: D215437 (1969-09-01), Halaby, Jr.
patent: D228899 (1973-10-01), Price et al.
patent: D236893 (1975-09-01), Beichlo
patent: 3388834 (1968-06-01), Hart
patent: 3543122 (1970-11-01), Klebanoff et al.
patent: 4235373 (1980-11-01), Clark
Largen James R.
Philpitt Fred
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