Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1991-05-20
1996-03-12
Lichtenstein, Lisa P.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
Patent
active
D03679233
REFERENCES:
patent: 1542529 (1925-06-01), Runback
patent: 1576121 (1926-03-01), Preble
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