The ornamental design for a pneumatictire tread and buttress, substantially as shown and described.
FIG. 1 is a perspective view of a pneumatic tire tread and buttress
embodying my new design, it being understood that the pattern is repeated
throughout the circumference of the tread and buttress as shown
schematically by solid lines, and that the buttress pattern is repeated on
the opposite side.
FIG. 2 is an enlarged fragmentary developmental plan view of the tread and
buttress of FIG. 1;
FIG. 3 is an enlarged sectional view of the tread and buttress, taken
substantially as indicated by line 3--3 of FIG. 2; and
FIG. 4 is an enlarged sectional view of the tread and buttress, taken
substantially as indicated by line 4--4 of FIG. 2.