Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-05-29
1981-10-27
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02615479
REFERENCES:
patent: D228235 (1973-08-01), Otto
patent: D248041 (1978-05-01), Persson
patent: 3884419 (1975-05-01), Geoffray
patent: 4102500 (1978-07-01), Luff
patent: 4128209 (1978-12-01), Johnson
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