Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-08-30
1979-11-06
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02533677
REFERENCES:
patent: D211876 (1968-08-01), Doman
patent: D214270 (1969-05-01), Bonsack
patent: D216466 (1970-01-01), Armstrong et al.
patent: D226607 (1973-04-01), Lawrence
patent: D244855 (1977-06-01), Doman
patent: D250829 (1979-01-01), Clement
patent: D250830 (1979-01-01), Clement
patent: 2566495 (1951-09-01), Miyakawa
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