Patent
   D821577
Priority
Jul 25 2016
Filed
Jan 25 2017
Issued
Jun 26 2018
Expiry
Jun 26 2033
Assg.orig
Entity
unknown
14
30
n/a
The ornamental design for a retractor, as shown and described.

FIG. 1 is a front perspective view of a retractor showing our new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof.

FIG. 8 is a cross-sectional view thereof, taken along line 8-8 of FIG. 2; and,

FIG. 9 is a perspective view thereof, showing the retractor in use after being inserted into a chest or an abdomen from a small incision, the retractor being deformed in a ring shape in a body, so as to keep the opened part in the opened state.

The broken lines illustrate environmental structure and form no part of the claimed design.

Yamasaki, Haruhiko, Morishita, Yoshiro, Shibata, Toshihiko, Mitsuhashi, Katsunori

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Jan 25 2017OSAKA CITY UNIVERSITY(assignment on the face of the patent)
Jan 25 2017OZK CO., LTD.(assignment on the face of the patent)
Jan 25 2017SHINWA SYOJI CO., LTD.(assignment on the face of the patent)
Feb 01 2017MITSUHASHI, KATSUNORISHINWA SYOJI CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0416860976 pdf
Feb 01 2017YAMASAKI, HARUHIKOSHINWA SYOJI CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0416860976 pdf
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