FIG. 1 is a front, left, top perspective view of an electric rocking chair showing my first new design;
FIG. 2 is a back, right, bottom perspective view of first design;
FIG. 3 is a front view of first design;
FIG. 4 is a back view of first design;
FIG. 5 is a left view of first design;
FIG. 6 is a right view of first design;
FIG. 7 is a top view of first design;
FIG. 8 is a bottom view of first design;
FIG. 9 is an enlarged view of the encircled area 9 of FIG. 1;
FIG. 10 is an enlarged view of the encircled area 10 of FIG. 1;
FIG. 11 is an enlarged view of the encircled area 11 of FIG. 2;
FIG. 12 is an enlarged view of the encircled area 12 of FIG. 3;
FIG. 13 is an enlarged view of the encircled area 13 of FIG. 5;
FIG. 14 is an enlarged view of the encircled area 14 of FIG. 8;
FIG. 15 is a front, left, top perspective view of an electric rocking chair showing my second new design;
FIG. 16 is a back, right, bottom perspective view of second design;
FIG. 17 is a front view of second design;
FIG. 18 is a back view of second design;
FIG. 19 is a left view of second design;
FIG. 20 is a right view of second design;
FIG. 21 is a top view of second design;
FIG. 22 is a bottom view of second design; and,
FIG. 23 is an enlarged view of the encircled area 23 of FIG. 16.
The broken lines shown on the drawings depict portions of the electric rocking chair that form no part of the claimed design.