The ornamental design for a microtrenchingblade and tooth, as shown and described herein.
FIG. 1 is a side view of a microtrenching blade showing our new design;
FIG. 2 is a perspective view thereof;
FIG. 3 is a close-up top view thereof;
FIG. 4 is a close-up side view thereof;
FIG. 5 is a side view of a cutting tooth used with the microtrenching blade of FIG. 1;
FIG. 6 is a front view of the cutting tooth shown in FIG. 5;
FIG. 7 is a top view of the cutting tooth shown in FIG. 5; and,
FIG. 8 is a perspective view of the cutting tooth shown in FIG. 5.
The pattern repeats uniformly throughout the circumference of the blade. The broken line in the figure drawings represents unclaimed environment only and forms no part of the claimed design.