Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Design Patent
2000-05-31
2001-05-29
Lichtenstein, Lisa (Department: 2911)
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
Design Patent
active
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
Browdy and Neimark
Lichtenstein Lisa
SPAL S.r.L.
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