Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-01-10
1986-07-15
Zarfas, Louis S.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02846926
REFERENCES:
patent: D208514 (1967-09-01), Hartwell
patent: D209364 (1967-11-01), Katzman et al.
patent: D212284 (1968-09-01), Mitchell
patent: D212285 (1968-09-01), Mitchell
patent: D262052 (1981-11-01), Akita
patent: 3152240 (1964-10-01), Scott
patent: 3351737 (1967-07-01), Katzman et al.
Degussa - AG
Zarfas Louis S,.
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