Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-08-22
1977-03-15
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02436906
REFERENCES:
patent: 2546808 (1951-03-01), Wood et al.
patent: 3255967 (1966-06-01), Kenney
patent: D186731 (1959-11-01), Zapolski
patent: D235544 (1975-06-01), Bippus et al.
Kavrukov Ivan S.
Largen James R.
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