Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-05-13
1985-01-29
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02774046
REFERENCES:
patent: D237971 (1975-12-01), Chiang
patent: 3834135 (1974-09-01), Jordan
patent: 3870494 (1975-03-01), Doane
patent: 3890124 (1975-06-01), Howes
patent: 3910782 (1975-10-01), Struble et al.
Clement Richard W.
Peterson Oscar
Detrex Chemical Industries, Inc.
Largen James R.
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