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The ornamental design for a sash lock, as shown. |
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FIG. 1 is a view in perspective of a sash lock showing my new design,
FIG. 2 is a top plan view thereof,
FIG. 3 is a bottom plan view thereof,
FIG. 4 is an end elevational view thereof,
FIG. 5 is a front elevational view thereof, and,
FIG. 6 is a rear elevational view thereof.
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