Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-09-24
1981-04-21
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02589842
REFERENCES:
patent: D219514 (1970-12-01), Skyhawk
patent: D225995 (1973-01-01), Alexander
patent: D227010 (1973-05-01), Alexander
patent: D243849 (1977-03-01), Seymour et al.
patent: D252585 (1979-08-01), Clow
patent: 3479778 (1969-11-01), Johnson
Ade Stanley G.
Largen James R.
Perma Glass Industries Ltd.
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