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US Patent 11680583 Construction machine
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Patent
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Current Assignee
Hitachi
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Date Filed
October 10, 2019
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Date of Patent
June 20, 2023
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Patent Applicant
Hitachi
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Patent Application Number
17284507
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Patent Citations
US Patent 10563657 Turbofan for air conditioning apparatus
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US Patent 9829004 Turbo fan and air conditioner
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US Patent 8668460 Turbo fan and air conditioner with turbo fan
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US Patent 8834121 Turbo fan and air conditioning apparatus
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US Patent 9157450 Impeller and turbomachinery including the impeller
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US Patent 9234524 Boundary layer controlled logarithmic spiral blade
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US Patent 9267511 Turbofan and indoor unit of air-conditioning apparatus including the same
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Patent Jurisdiction
United States Patent and Trademark Office
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Patent Number
11680583
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Patent Primary Examiner
J. Todd Newton
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CPC Code
F04D 29/281
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F04D 29/30
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F04D 29/4226
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F04D 29/441
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