Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-11-18
1977-06-28
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02448548
REFERENCES:
patent: D167285 (1952-07-01), Schmid
patent: D187205 (1966-02-01), Laughlin
patent: D191184 (1961-08-01), Scholz
patent: 574766 (1897-01-01), Pierce
patent: 873120 (1907-12-01), Dunstan
patent: 979182 (1910-12-01), MacDonald
patent: 1477435 (1923-12-01), Fagan
patent: 1622652 (1927-03-01), Lang
patent: 1659307 (1928-02-01), Wittman
patent: 2615526 (1952-10-01), Lane
patent: 2689017 (1954-09-01), Schmid
Jacobson Harvey B.
Largen James R.
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