Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-08-31
1983-10-11
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 3 301, D0707
Patent
active
D02709392
REFERENCES:
patent: D267442 (1983-01-01), Anderson
patent: 3248364 (1981-02-01), Anderson
patent: 3481519 (1969-12-01), Shetselaar
patent: 4119250 (1978-10-01), Brutlag
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