Centrifugal electric fan with a fan wheel contained in a spiral housing, equipped with one lateral grid

US D443,054 S · Assignee: SPAL S.r.L. · Inventors: Spaggiari; Alessandro

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Granted May 29, 2001. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended May 29, 2015.
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FiledMay 31, 2000

GrantedMay 29, 2001

Term endedMay 29, 2015

Application numberD/124091

Classification (CPC)F04D29/703 +1 more

Length8 pages

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Full published documentText and every drawing sheet as a PDF.USPTO File historyStatus, office actions, notices, fee records and petitions.USPTO Patent Center Patent Public Search recordSearchable full text and bibliographic data.USPTO

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