Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1990-07-20
1992-09-01
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
Patent
active
D03290859
REFERENCES:
patent: D258759 (1981-03-01), Johnson
patent: 1999770 (1935-04-01), Littleton
patent: 3722182 (1973-03-01), Gilbertson
patent: 4047913 (1977-09-01), Okumura
patent: 4252547 (1981-02-01), Johnson
patent: 4547208 (1985-10-01), Dace
patent: 4790863 (1988-12-01), Nobiraki et al.
Symbol Sourcebook, .COPYRGT.1972, p. 95, Oasis Symbol, top right side of page.
Burke Wallace R.
Gilden Leon
Lichtenstein Lisa
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