Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-07-24
1977-03-01
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02435306
REFERENCES:
patent: 3776412 (1973-12-01), Mink
patent: D186694 (1959-11-01), Skinner et al.
patent: D213249 (1969-01-01), Winegardner
patent: D238874 (1976-02-01), Bethoud
Bodine Kenneth E.
McDowell Verle A.
Largen James R.
Law Richard D.
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