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The ornamental design for a photomask blank, as shown and described.
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FIG. 1 is a front elevational view of a photomask blank showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is an enlarged partial front view along line 7—7 in FIG. 1;
FIG. 8 is a reduced scale front, left side, top perspective view of the portion shown in FIG. 7; and,
FIG. 9 is a sectional view along line 9—9 in FIG. 7.
The broken line showing is for illustrative purposes only and forms no part of the claimed design.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 23 2004 | Hoya Corporation | (assignment on the face of the patent) | / | |||
Oct 28 2004 | MITSUI, MASARU | Hoya Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015390 | /0574 |
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