The ornamental design for pylon, as shown and described.
1. Pylon
Figure 1.1 is a perspective view of a pylon;
Figure 1.2 is a front view thereof;
Figure 1.3 is a back view thereof;
Figure 1.4 is a left view thereof; and
Figure 1.5 is a right view thereof;
Figure 1.6 is a top view thereof;
Figure 1.7 is a bottom view thereof;
Figure 1.8 is an enlarged view of a portion taken from Figure 1.1.;
Figure 1.9 is an enlarged view of Figure 1.6 shown for ease of illustration; and
Figure 1.10 is an enlarged view of Figure 1.7 shown for ease of illustration.
The dot-dot-dash broken lines in Figures 1.1 and Figure 1.8 illustrate the portion where the enlarged views are taken from and form no part of the claimed design.