Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-01-30
1977-11-15
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02463750
REFERENCES:
patent: D233233 (1974-10-01), Murray et al.
patent: D234298 (1975-02-01), Bower
patent: 3221881 (1965-12-01), Weiler et al.
patent: 3662918 (1972-05-01), Crawford
patent: 3875066 (1975-04-01), Link
patent: 3898162 (1975-08-01), Carlson et al.
Largen James R.
Robbins Leonard J.
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