Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-05-14
1987-04-14
Bullock, B. J.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 3
Patent
active
D02893177
REFERENCES:
patent: D275310 (1984-08-01), Stanley
patent: 2987187 (1961-06-01), Comroe
patent: 3342340 (1967-09-01), Shindell
patent: 4178249 (1979-12-01), Councill
patent: 4218317 (1980-08-01), Kirschmann
patent: 4271015 (1981-06-01), Moore
patent: 4287057 (1981-09-01), Stanley
patent: 4368123 (1983-01-01), Stanley
patent: 4389311 (1983-06-01), LeFreniere
Hale Cecil W.
Mezey Armand G.
Bullock B. J.
Nelson Gregory J.
Vinson Brian N.
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