Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-03-20
1980-05-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02550474
REFERENCES:
patent: D84785 (1931-08-01), Keim
patent: D204756 (1966-05-01), Farrell
patent: D246316 (1977-11-01), Hadtke
patent: 2555047 (1951-05-01), Logue
patent: 2657090 (1953-10-01), Meek
patent: 2708595 (1955-05-01), Ludwig
patent: 2836462 (1958-05-01), Wenner
patent: 3286872 (1966-11-01), Burdick, Jr.
patent: 3754707 (1973-08-01), Morane
patent: 4014501 (1977-03-01), Buckenmayer
Hassle Max A.
Muller Arthur W.
Airwick Industries Inc.
Falber Harry
Largen James R.
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