Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-03-12
1981-10-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02614154
REFERENCES:
patent: D110210 (1938-06-01), Everson
patent: D209440 (1967-11-01), Schneider, Jr.
patent: D213294 (1969-02-01), Stenberg
patent: D222249 (1971-10-01), Lucas
patent: D222250 (1971-10-01), Lucas
patent: D241438 (1976-09-01), Kim
patent: D251675 (1979-04-01), Kratz
patent: 2887444 (1959-05-01), Lindstaedt
patent: 3378479 (1968-04-01), Colvin et al.
patent: 4097356 (1978-06-01), Yates
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