Patent
   D413791
Priority
May 13 1997
Filed
May 13 1997
Issued
Sep 14 1999
Expiry
Sep 14 2013
Assg.orig
Entity
unknown
23
5
n/a
The ornamental design for a tightening ring apparatus, as shown and described.

FIG. 1 is a front elevational view of a tightening ring showing my new design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front elevational view thereof showing the ring in the operative state the broken lines are shown for illustrative purposes only and form no part of the claimed design.

May, Aaron

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