Extraction device for polluted gases

Details Extraction device for polluted gases Extraction device for polluted gases

2001-05-10

2002-09-17

Lichtenstein, Lisa (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0463017

CLAIM:
The ornamental design for a extraction device for polluted gases, as shown and described.

REFERENCES:
patent: D262235 (1981-12-01), Hamilton
patent: D327122 (1992-06-01), Holmgren
patent: 5427569 (1995-06-01), Plumoth
patent: 5527217 (1996-06-01), Engstrom

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