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The ornamental design for a welding mask, as shown.
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FIG. 1 is a perspective view showing my new design;
FIG. 2 is a front elevation view;
FIG. 3 is a rear elevation view;
FIG. 4 is a top plan view;
FIG. 5 is a bottom plan view; and,
FIG. 6 is a left side elevation view, the right side elevation view being a mirror image thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Feb 09 2005 | Otos Tech Co., Ltd. | (assignment on the face of the patent) | / | |||
Feb 09 2005 | HUH, MOON YOUNG | OTOS TECH CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 016281 | /0382 | |
Nov 29 2007 | OTOS TECH CO , LTD | OTOS TECH CO , LTD | CHANGE OF ASSIGNEE S ADDRESS | 021731 | /0228 |
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