Combined air filter and freshener

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

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D2304

Patent

active

D02587599

REFERENCES:
patent: D227669 (1973-07-01), Mann
patent: D234597 (1975-03-01), Diachuk
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patent: 4025325 (1977-05-01), Goodwin, Jr.

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