Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-10-17
1977-08-23
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02455102
REFERENCES:
patent: D194376 (1963-01-01), Jacobs
patent: D196408 (1963-09-01), Chatham
patent: D206842 (1967-01-01), Surckla
Sweet's Architectural File, 1972, p. 2, Section 15.12/AJ, Item 700 Series, sight proof grille.
Heating/Piping/Air Conditioning, Sept. 1973, p. 83, upper right corner, H Horizontal Unit Heater.
Hardware Age, Oct. 31, 1940, p. 147, upper right corner, Gas Circulating Heater.
Adams Joseph W.
Herman Albert W.
Bettcher Manufacturing Corporation
Bosworth Frederic M.
Burke Wallace R.
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