Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-08-20
1982-01-05
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02625687
REFERENCES:
patent: D111894 (1938-10-01), Conner
patent: D182725 (1958-05-01), Kaufmann
patent: D206214 (1966-11-01), Erbe
patent: D221650 (1971-08-01), Gruber
patent: 1928799 (1933-10-01), Stevens
patent: 3071326 (1963-01-01), Benak
patent: 3691787 (1972-09-01), Kaufmann
patent: 3713583 (1973-01-01), Gruber
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