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The ornamental design for a chin portion of welding helmet visor, as shown and described.
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FIG. 1 is a front perspective view of a chin portion of a welding helmet visor showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a left side view, the right side being a mirror image thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
The details shown in broken lines form no part of the claimed design.
Curran, Desmond T., Lee, Peter D., Martin, Daniel
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Oct 04 2004 | LEE, PETER D | 3M Innovative Properties Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 016000 | /0075 | |
Oct 08 2004 | MARTIN, DANIEL | 3M Innovative Properties Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 016000 | /0075 | |
Oct 12 2004 | CURRAN, DESMOND T | 3M Innovative Properties Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 016000 | /0075 | |
Nov 12 2004 | 3M Innovative Properties Company | (assignment on the face of the patent) | / |
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