US Patent 7108439 Flexible barrel writing instrument
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Patent Inventor Names
Gaoyuan Zhu0
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Patent abstract
A writing instrument having a retractable ball point pen with a metallic coil or spring barrel which permits the instrument to bend, a cushion or textured grip, inner and upper sleeves to provide a housing for the ends of the ink refill cartridge, a click mechanism to extend and retract the ball point and a clip and method of producing the instrument.
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US Patent 07108439 Flexible barrel writing instrument US Patent 7108439 Flexible barrel writing instrument
Infobox
Patent Number
071084390
Patent Number
71084390
Edits on 25 Sep, 2022
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Patent Jurisdiction
Patent Number
071084390
Date of Patent
September 19, 2006
0Patent Application Number
104201450
Date Filed
April 22, 2003
0Official Website
Patent Primary Examiner
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US Patent 07108439 Flexible barrel writing instrument
Infobox
Is a
Patent jurisdiction
Patent number
07108439
Date of patent
September 19, 2006
Patent application number
10420145
Date Filed
April 22, 2003
Patent primary examiner
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