Air conditioning ceiling grille

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified

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2399

Patent

active

D04331168

REFERENCES:
patent: D190540 (1961-06-01), Beckett
patent: D205168 (1966-06-01), Schreckengoat
patent: D387859 (1997-12-01), Ukai et al.

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