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, 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 a sectional view of the tread and buttress, taken substantially
as indicated by line 3--3 of FIG. 2; and
FIG. 4 is a sectional view of the tread and buttress taken substantially as
indicated by line 4--4 of FIG. 2.