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The ornamental design for chair back, as shown and described. |
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FIG. 1 is a top right perspective view of my chair back showing the ornamental design thereof.
FIG. 2 is a lower left perspective view thereof.
FIG. 3 is a top view thereof.
FIG. 4 is a front view thereof.
FIG. 5 is an enlarged view of a portion of the chair back of FIG. 1 taken generally from circle 5 of FIG. 1.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 29 1980 | HANAFORD DONALD E | THOMSON, ARTHUR E , | ASSIGNMENT OF ASSIGNORS INTEREST | 003794 | 0052 | |
| Apr 28 1989 | THOMSON, ARTHUR E | COLLINS, WILLIAM | ASSIGNMENT OF ASSIGNORS INTEREST | 005125 | 0788 |
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