Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-06-21
1978-05-30
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23127, D25 56, D25 92, D2303
Patent
active
D02480425
REFERENCES:
patent: D243185 (1977-01-01), Parker et al.
patent: D244606 (1977-06-01), Riley
patent: 1014972 (1912-01-01), Nichols
patent: 1042418 (1912-10-01), Evans
Kennedy Robert B.
Largen James R.
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