Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-11-29
1986-02-25
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02827727
REFERENCES:
patent: D186489 (1959-10-01), Fryo
patent: D237968 (1975-12-01), Olson, Jr.
patent: D258381 (1981-02-01), Lewis
patent: 1935425 (1933-11-01), Wiggins
patent: 2257427 (1941-09-01), Parker
patent: 2674785 (1954-04-01), Crawley
patent: 2741997 (1956-04-01), Parker
patent: 3416818 (1968-12-01), Conlin
Design News, Jun. 6, 1960, p. 13, top right item.
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