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The ornamental design for a walking-beam anchor chain tensioning apparatus, substantially as shown and described.
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FIG. 1 is a front elevational view of a walking-beam anchor chain tensioning apparatus according to the invention showing the new design, the rear view being identical;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom plan view thereof.
Only a portion of the chain has been shown in the disclosure for ease of illustration.
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