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			 The ornamental design for a book lamp, as shown and described.  | 
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FIG. 1 is a right side elevational view of a book lamp showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right side elevational view thereof similar to FIG. 1, but with a portion of the lamp in an extended position; and
FIG. 8 is a right side elevational view similar to FIG. 7, but with the extended portion of the lamp tilted to a position convenient for use.
| Patent | Priority | Assignee | Title | 
| D279222, | May 13 1981 | Duracell Inc. | Portable light | 
| D290884, | May 31 1984 | Matsushita Electric Industrial Co., Ltd. | Portable rechargeable light | 
| Patent | Priority | Assignee | Title | 
| 2561744, | |||
| 3479499, | |||
| 168965, | |||
| 207063, | 
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