Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Domestic water heater or boiler
Patent
1992-06-19
1993-12-07
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Domestic water heater or boiler
D23314, D23386
Patent
active
D03421252
REFERENCES:
patent: D280547 (1985-09-01), Fukumoto
patent: 2432362 (1947-12-01), Worn et al.
Burke Wallace R.
Lichtenstein Lisa
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