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US Patent 11818979 Grass trimmer

OverviewStructured DataIssuesContributorsActivity
Is a
Patent
Patent
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Date Filed
September 20, 2019
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Date of Patent
November 21, 2023
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Patent Application Number
16577063
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Patent Citations
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US Patent 7797839 Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism
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US Patent 8025249 Bi-directional trimmer head spool with curved trimmer line guide
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US Patent 8230602 Line-type grass cutting head which can be alternatively used on machines with left or right rotation
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US Patent 8464431 String head for a trimmer
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US Patent 8510960 Trimmer head spool for use in flexible line rotary trimmer heads having improved line loading mechanism
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US Patent 9253942 Trimmer head with automatic trimmer line feed mechanism
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US Patent 9516807 Straight through line feed vegetation trimmer apparatus
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US Patent 9517555 Battery operated handheld power tool
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US Patent 10273112 String trimmer head with curved trimmer line guide
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US Patent 10440882 Grass trimmer, operating method thereof and control method thereof
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•••
Patent Inventor Names
Toshinari Yamaoka
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Jianpeng Guo
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Maohui Li
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Fangjie Nie
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
11818979
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Patent Primary Examiner
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Sean M Michalski
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CPC Code
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A01D 34/4166
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A01D 34/4161
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A01D 34/4162
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A01D 34/412
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A01D 34/416
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A01D 34/4163
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