Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-08-08
1978-12-26
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02506599
REFERENCES:
patent: D191860 (1961-12-01), Halberson
patent: D196225 (1963-09-01), Graning, Jr.
patent: D211524 (1968-06-01), Plantholt
patent: D228500 (1973-10-01), Ritzenthaler
patent: D240825 (1976-08-01), Gruber
Design, Jun. 1963, p. 68, Item No. 1.
Staffeld Gary C.
Stevenson Earle D.
Largen James R.
Stelmah John
Youngstown Sheet and Tube Company
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