Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-12-10
1979-03-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02513803
REFERENCES:
patent: 1705042 (1929-03-01), Babitch
patent: 2565696 (1951-08-01), Ketelsen
patent: 2647635 (1953-08-01), Hove et al.
patent: 2894606 (1959-07-01), Veres
patent: 3883428 (1975-05-01), Waring
patent: 3931011 (1976-01-01), Richards
patent: 4017397 (1977-04-01), Copeland
Largen James R.
Robbins Leonard J.
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