Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-09-28
1978-08-22
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02490595
REFERENCES:
patent: 2642859 (1953-06-01), Brown
patent: 2743720 (1956-05-01), Dollinger
patent: 2747568 (1956-05-01), Dupler
patent: 2789554 (1957-04-01), Dupler
patent: 3896785 (1975-07-01), Nelson
patent: 4015581 (1977-04-01), Martenson
patent: 4026264 (1977-05-01), Henriques
Bradford Richard H.
Largen James R.
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