Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1991-08-20
1992-06-23
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
Patent
active
D03273172
REFERENCES:
patent: D132821 (1942-06-01), Leslie
patent: D259277 (1981-05-01), McDermott
patent: 3469518 (1969-09-01), Howard
Denmark Patent, Toy Nr 10, lower left side of page.
Burke Wallace R.
Lesperance Pierre
Lichtenstein Lisa
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