Retractor
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The broken lines illustrate environmental structure and form no part of the claimed design.
Claims
The ornamental design for a retractor, as shown and described.
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Type: Grant
Filed: Jan 25, 2017
Date of Patent: Jun 26, 2018
Assignees: OSAKA CITY UNIVERSITY (Osaka-Shi), OZK CO., LTD. (Yao-Shi), SHINWA SYOJI CO., LTD. (Higashiosaka-Shi)
Inventors: Toshihiko Shibata (Osaka), Haruhiko Yamasaki (Yao), Katsunori Mitsuhashi (Yao), Yoshiro Morishita (Higashiosaka)
Primary Examiner: Jeffrey D Asch
Assistant Examiner: Rebekah A Caruso
Application Number: 29/591,945