Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-04-16
1978-02-21
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02473038
REFERENCES:
patent: D141623 (1945-06-01), Thompson
patent: D230152 (1974-01-01), Frochlke
patent: 2910711 (1959-11-01), Mizelle
patent: 3023971 (1962-03-01), Milhous
patent: 3041655 (1962-07-01), Entler
patent: 3908910 (1975-09-01), Detwiler
Drucker William Anthony
Largen James R.
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