Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-06-13
1979-05-29
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02519836
REFERENCES:
patent: D153490 (1949-04-01), Beebee
patent: D164822 (1951-10-01), Russell
patent: D221756 (1971-09-01), Benjamin
patent: 2935265 (1960-05-01), Richter
patent: 3031147 (1962-04-01), Goodrie
patent: 3224793 (1965-12-01), Benjamin
patent: 3623670 (1971-11-01), Wakeman et al.
patent: 3831860 (1974-08-01), Gullaksen
Largen James R.
Prutzman John M.
Vanderburgh Enterprises, Inc.
Whedon-Brome Corp.
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