Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-02-02
1978-09-26
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02497018
REFERENCES:
patent: D212089 (1968-08-01), Peifer
patent: D212440 (1968-10-01), Cannon et al.
patent: D225883 (1973-01-01), DiPierro et al.
patent: D227345 (1973-06-01), Bell et al.
patent: D232550 (1974-08-01), Fushihara
patent: D240624 (1976-07-01), MacMurray
patent: 3670892 (1972-06-01), Baerg et al.
patent: 3939074 (1976-02-01), Bray
Klepa Peter P.
Maples Paul D.
Ropp Ralph E.
Brown Carl R.
Largen James R.
Maples Paul Douglas
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