Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-12-04
1981-05-12
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02592061
REFERENCES:
patent: D207514 (1967-04-01), Hoyle
patent: D213695 (1969-04-01), Soroos
patent: D226914 (1973-05-01), Hoyle
patent: D244294 (1977-05-01), Glasoe
patent: 3498080 (1970-03-01), Campbell et al.
patent: 4026971 (1977-05-01), Glasoe
Largen James R.
Nelson Gregory J.
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