Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-09-21
1978-10-03
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02498049
REFERENCES:
patent: D128314 (1941-07-01), Kelly
patent: D224107 (1972-07-01), Mastis
patent: 486118 (1892-11-01), McElroy
patent: 1914368 (1933-06-01), Goodall
patent: 3831984 (1974-08-01), Kutina et al.
Largen James R.
Waters Eric
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