Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-07-06
1983-10-11
Word, A. Hugo
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D25 15, D25 55, D2502
Patent
active
D02709406
REFERENCES:
patent: D203484 (1966-01-01), Rousey et al.
patent: D221854 (1971-09-01), Dowdell, Jr. et al.
patent: 3063195 (1962-11-01), Ravich
patent: 4280399 (1981-07-01), Cunning
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