Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-01-22
1983-10-11
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 66, D30 11, D2302
Patent
active
D02709368
REFERENCES:
patent: D101441 (1936-10-01), Dreyfuss
patent: D179484 (1957-01-01), Lampkins
patent: D199729 (1964-12-01), Kaiser
patent: D229766 (1971-01-01), Kephart
patent: 830286 (1906-09-01), Alexander
patent: 918456 (1909-04-01), Marcellus
patent: 2238699 (1941-04-01), Levine
patent: 3968525 (1976-07-01), Alexander
patent: 4364132 (1982-12-01), Robinson
Largen James R.
Schatzel Thomas E.
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