Tandem sub

USD1078807SActive Publication Date: 2025-06-10PERFX WIRELINE SERVICES LLC

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[0001] FIG. 1 is a first perspective view of a tandem sub, showing my new design.

[0002] FIG. 2 is second perspective view of the tandem sub of FIG. 1 shown from a different angle, and from an end opposite that of FIG. 9.

[0003] FIG. 3 is a top, plan view of the tandem sub of FIGS. 1 and 2.

[0004] FIG. 4 is a is a bottom plan view thereof.

[0005] FIG. 5 is a right side elevation view thereof.

[0006] FIG. 6 is a left side elevation view thereof.

[0007] FIG. 7 is a front plan view of the tandem sub of FIG. 1; and,

[0008] FIG. 8 is a rear plan view thereof.

[0009] The broken lines in the drawings depict portions of the tandem sub that form no part of the claimed design.

The ornamental design for a tandem sub as shown and described.

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