Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-10-06
1978-08-22
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02490552
REFERENCES:
patent: D121017 (1940-06-01), Newman
patent: D135202 (1943-03-01), Van Guilder
patent: D195771 (1963-07-01), Soussloff
patent: D228642 (1973-10-01), Chasteen et al.
patent: D236463 (1975-08-01), Gioragnoli
patent: 3055810 (1962-09-01), Skow
patent: 3350279 (1967-10-01), Tolchin
patent: 3830705 (1974-08-01), Dewegeli
Largen James R.
Strom Louis J.
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