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US Patent 11834889 Door opener with adjustable screw rod

OverviewStructured DataIssuesContributors
Is a
Patent
Patent
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Date Filed
November 12, 2021
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Date of Patent
December 5, 2023
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Patent Application Number
17524818
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Patent Citations
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US Patent 8169169 Door operator for controlling a door and method of same
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US Patent 10024094 Apparatus for connecting door closer or operator to swing door
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US Patent 10030425 Apparatus for providing constant torque output from a door closer or operator
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US Patent 10030426 Inductive door position sensor
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US Patent 10077591 Door operator assembly
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US Patent 10180023 Apparatus and method for control of spring force in a door closer or operator
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US Patent 10208520 Method and apparatus for adjusting the closing force of a door
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US Patent 10236801 Door closer system
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US Patent 10253540 Apparatus for connecting door closer or operator to swing door
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US Patent 10280670 Dual direction door closer
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•••
Patent Inventor Names
Hung-Jen Tien
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
11834889
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Patent Primary Examiner
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Jerry E Redman
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CPC Code
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E05Y 2600/322
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E05Y 2600/45
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E05Y 2600/52
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E05Y 2600/62
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E05Y 2600/622
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E05Y 2900/132
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E05Y 2400/45
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E05F 15/63
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E05F 15/622
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E05F 1/105
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•••

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