Patent
   D859520
Priority
Sep 15 2017
Filed
Mar 14 2018
Issued
Sep 10 2019
Expiry
Sep 10 2034
Assg.orig
Entity
unknown
0
13
n/a
The ornamental design for a demonstration tool, as shown and described.

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view of a demonstration tool showing my new design;

FIG. 2 is a front view of the demonstration tool of FIG. 1;

FIG. 3 is a rear view of the demonstration tool of FIG. 1;

FIG. 4 is a left-side view of the demonstration tool of FIG. 1;

FIG. 5 is a right-side view of the demonstration tool of FIG. 1;

FIG. 6 is a top plan view of the demonstration tool of FIG. 1; and,

FIG. 7 is another perspective view of the demonstration tool of FIG. 1.

Ye, Seo Ji

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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 14 2018Carl Zeiss VIsion International GmbH(assignment on the face of the patent)
Jun 28 2018YE, SEO JIVIEWITECH CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0466090910 pdf
Jun 28 2018VIEWITECH CO , LTD Carl Zeiss VIsion International GmbHASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0469210100 pdf
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