Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Domestic water heater or boiler
Patent
1993-10-21
1995-03-14
Lichtenstein, Lisa P.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Domestic water heater or boiler
D23386
Patent
active
D03563677
REFERENCES:
patent: D128514 (1941-07-01), Young
patent: D205870 (1966-09-01), Hill
patent: D264501 (1982-05-01), Beaton
patent: 2988063 (1961-06-01), Vorkauf
Lichtenstein Lisa P.
Ruffneck Heaters-Div. of Starozik Industries Inc.
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