Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-10-18
1980-01-15
Ansher, Bernard
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02539632
REFERENCES:
patent: D242861 (1976-12-01), Carlson
patent: 2590577 (1952-03-01), Ruemelin
patent: 2730033 (1956-01-01), Mellor
patent: 3425335 (1969-02-01), Black
patent: 3986835 (1976-10-01), Takagi
Ansher Bernard
Kemper Catherine
Osann Robert
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