Centrifugal electric fan with a fan wheel contained in a...

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment

Design Patent

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Design Patent

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D0443054

CLAIM:
The ornamental design for a centrifugal electric fan with a fan wheel contained in a spiral housing, equipped with one lateral grid, as shown and described.

REFERENCES:
patent: 5314300 (1994-05-01), Gatley, Jr. et al.
patent: 5743721 (1998-04-01), Graham et al.
patent: 5997246 (1999-12-01), Humbad

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