Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-11-24
1980-01-15
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02539659
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patent: D161215 (1950-12-01), SeBastian
patent: D180783 (1957-08-01), Helms et al.
patent: D181318 (1957-10-01), Schreckengost
patent: D182029 (1958-04-01), Kirk
patent: 2755015 (1956-07-01), Douglas et al.
patent: 2867377 (1959-01-01), Lasko
patent: 2950859 (1960-08-01), Kirk
patent: 2968457 (1961-01-01), Krauss
Largen James R.
Robbins Leonard J.
Ventronic Technic AG.
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