Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-05-09
1986-10-07
Bullock, B. J.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 8302, D 8310, D 8350, D23 31
Patent
active
D02860651
REFERENCES:
patent: D110995 (1938-08-01), Bellem, Jr.
patent: D140257 (1945-02-01), Shaeffer
patent: D203795 (1966-02-01), Harvey et al.
patent: D219782 (1971-01-01), Tiller
patent: D241938 (1976-10-01), Wallace et al.
Domestic Engineering, Jan. 1964, p. 119, top left item.
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