Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-12-04
1981-04-21
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D25 52, D25 91, D2304
Patent
active
D02589850
REFERENCES:
patent: D165244 (1951-11-01), Rondessy
patent: D214031 (1969-05-01), Rose
patent: D245102 (1977-07-01), Gross
patent: 3287870 (1966-11-01), Johnson
Peirce Elwin E.
Waltz Arthur L.
Largen James R.
Secrest T. W.
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