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US Patent 7340983 Spanner with prevention of disengagement of fasteners

Patent 7340983 was granted and assigned to Easco Hand Tools on March, 2008 by the United States Patent and Trademark Office.

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Patent Citations Received
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US Patent 11969864 Multi-tier torque enhancer driver and/or receiver and method of using same
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US Patent 11963933 Torque enhancer device for grasping and tooling, and assemblies and uses thereof
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US Patent 11944587 Grasping facilitators and uses thereof and kits involving the same
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Patent Inventor Names
David Ling0
Hsien-Chung Tuan-Mu0
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Patent abstract

A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.

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US Patent 07340983 Spanner with prevention of disengagement of fasteners US Patent 7340983 Spanner with prevention of disengagement of fasteners

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Patent Number
073409830
Patent Number
73409830
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=073409830
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Infobox
Is a
Patent
Patent
0
Current Assignee
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Easco Hand Tools
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
073409830
Date of Patent
March 11, 2008
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Patent Application Number
108799230
Date Filed
June 28, 2004
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=073409830
Patent Primary Examiner
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Joseph J. Hail, III
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=07340983
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 US Patent 07340983 Spanner with prevention of disengagement of fasteners

Infobox
Is a
Patent
Patent
Current assignee
‌
Easco Hand Tools
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
07340983
Date of patent
March 11, 2008
Patent application number
10879923
Date Filed
June 28, 2004
Patent primary examiner
‌
Joseph J. Hail, III

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