Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-08-27
1981-10-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02614170
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patent: 3836083 (1974-09-01), Bell
Domestic Engineering, Nov. 1963, p. 68.
House & Garden, Apr. 1949, p. 157, "Self-cleaning Showerhead", item.
Friedrich Grohe Armaturenfabrik GmbH & Co.
Largen James R.
Lenkszus Donald J.
Raden James B.
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