Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-08-15
1979-06-12
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02520966
REFERENCES:
patent: D190948 (1961-07-01), Paulson
patent: D235340 (1975-06-01), Mize
patent: 3823852 (1974-07-01), Nikowitz
Graham Richard D.
Keener Dan A.
Breidenthal Robert E.
Largen James R.
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