The ornamental design for a pneumatictire tread and buttress, substantially as shown and described.
FIG. 1 is a perspective view, partly schematic, 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;
FIG. 2 is an enlarged, fragmentary developemental 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, fragmentary sectional view of the tread and
buttress, taken substantially as indicated by line 4--4 of FIG. 2.