Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-04-14
1982-06-01
Word, A. Hugo
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23151, D25 48, D25 60, D2304
Patent
active
D02647516
REFERENCES:
patent: 3112686 (1963-12-01), Peterson
patent: 3115818 (1963-12-01), Smith
patent: 3218952 (1965-11-01), Gygax
patent: 3270655 (1966-09-01), Guirl et al.
patent: 3859900 (1975-01-01), Fordsmand
patent: 4074620 (1978-02-01), Jansson
Bean James L.
HCR Incorporated
Word A. Hugo
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