The ornamental design for a holder for securingconnection of electrical extention cords, as shown and described.
FIG. 1 is a top plan view of a holder for securing connection of electrical
extension cords showing my new design. The broken line showing of the
electrical cord is included for the purpose of illustrating environmental
elements only and forms no part of the claimed design;
FIG. 2 is a front elevational view thereof, the rear elevational view
thereof being a mirror image;
FIG. 3 is a left side elevational view thereof, the right side elevational
view thereof being a mirror image; and,
FIG. 4 is a perspective view thereof as seen from the front and upper left.