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US Patent 7437979 Screwdriver bit

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edited on 17 Apr, 2024
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Patent Citations Received
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US Patent 11958168 Wear resistant tool bit
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edited on 13 Dec, 2023
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Patent Citations Received
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US Patent 11839956 Bit
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Patent Inventor Names
Jui-Hsiao Wang0
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edited on 15 Sep, 2023
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Patent abstract

A screwdriver bit includes a shank for coupling with a tool for rotating the shank. An engaging portion extends from one of two ends of the shank and includes an insertion section for coupling with a fastener. A reduced, threaded section is formed between one of the ends of the shank and the insertion section of the engaging portion. The reduced, threaded section includes an outer diameter smaller than that of the ends of the shank and an outer threading. The outer threading of the reduced, threaded section provides uniform stress distribution during torque transmission.

Edits on 22 May, 2023
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edited on 22 May, 2023
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US Patent 07437979 Screwdriver bit US Patent 7437979 Screwdriver bit

Infobox
Patent Number
074379790
Patent Number
74379790
Edits on 19 May, 2023
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edited on 19 May, 2023
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=074379790
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Infobox
Is a
Patent
Patent
0
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
074379790
Date of Patent
October 21, 2008
0
Patent Application Number
118531450
Date Filed
September 11, 2007
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=074379790
Patent Primary Examiner
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David B. Thomas
0
Edits on 14 Jun, 2022
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edited on 14 Jun, 2022
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=07437979
Edits on 1 Dec, 2021
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created this topic on 1 Dec, 2021
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 US Patent 07437979 Screwdriver bit

Infobox
Is a
Patent
Patent
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
07437979
Date of patent
October 21, 2008
Patent application number
11853145
Date Filed
September 11, 2007
Patent primary examiner
‌
David B. Thomas

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