Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-05-11
1980-11-18
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02575442
REFERENCES:
patent: D198428 (1964-06-01), Cordis et al.
patent: D235771 (1975-07-01), Christophel
patent: 1786024 (1930-12-01), Olson
patent: 2614532 (1952-10-01), Steel
patent: 2827917 (1958-03-01), Cripo
patent: 3342206 (1967-09-01), Martin
Largen James R.
Shenandoah Manufacturing Co. Inc.
Van Poole Thomas B.
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