Air-tight valve for overtube
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The broken line showing of the overtube in the
Claims
The ornamental design for air-tight valve for overtube, as shown and described.
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Type: Grant
Filed: Sep 25, 2009
Date of Patent: Sep 21, 2010
Assignee: Sumitomo Bakelite Company, Ltd. (Tokyo)
Inventors: Shinetsu Harata (Akita), Yoshiki Toyota (Akita)
Primary Examiner: Bridget L Eland
Attorney: Smith, Gambrell & Russell, LLP
Application Number: 29/344,214