Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-10-01
1977-08-09
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02453320
REFERENCES:
patent: D191692 (1961-10-01), Holden
patent: D202405 (1965-09-01), Opponheimer
patent: D232939 (1974-09-01), Levy
patent: D237966 (1975-12-01), McNair
patent: 2325123 (1943-07-01), Isenberg
patent: 3870419 (1975-03-01), Sage
Shames Harold
Shames Sidney J.
Largen James R.
Lettvin Norman
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