The ornamental design for a portable compressed gas powerassembly, as shown and described.
FIG. 1 is an elevation view from the front showing the front side of our new design.
FIG. 2 is an elevation view from the back showing the back side of our design.
FIG. 3 is an elevation view from the left side showing the left side of our design.
FIG. 4 is an elevation view from the right showing the right side of our design.
FIG. 5 is an elevation view from the top showing the top side of our design; and,
FIG. 6 is an elevation view from the bottom showing the bottom side of our design.
It should be understood that the labels used herein for describing orientation (e.g., front, back, top, bottom, right, and left) are merely for reference, and our design may be disposed in any manner and still be within the scope of the present invention. Elements shown in broken lines form no part of the claimed design.