Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-06-30
1980-09-23
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02570602
REFERENCES:
patent: D129935 (1941-10-01), Wilcoxson
patent: D211576 (1968-07-01), Jenn et al.
patent: D249158 (1978-08-01), Morrow
AAA Associates Inc.
Hobbs Marmaduke A.
Largen James R.
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