US Patent 8967949 Sound-proofed helicocentrifugal fan
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Patent abstract
A sound-proofed helicocentrifugal fan includes a helicocentrifugal propeller associated with a motor, housed in a casing formed by a central piece and respective end pieces, which pieces are perforated with holes distributed over the entire surface except for the area around the propeller. A sound-absorbing blanket surrounds the casing, and an outer casing is disposed around the entire assembly.
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Patent Inventor Names
Marius Gamissans Bou0
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US Patent 08967949 Sound-proofed helicocentrifugal fan US Patent 8967949 Sound-proofed helicocentrifugal fan
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Patent Number
08967949
Patent Number
8967949
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US Patent 08967949 Sound-proofed helicocentrifugal fan
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Is a
Patent jurisdiction
Patent number
08967949
Date of patent
March 3, 2015
Patent application number
13320103
Date Filed
July 19, 2010
Patent primary examiner
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