Picolino Filter with Optimized Keylock

FIG. 1 shows a perspective top view of the picolino filter with optimized keylock showing our new design; FIG. 2 shows a front elevational view thereof; FIG. 3 shows a rear elevational view thereof; FIG. 4 shows a right side elevational view thereof; FIG. 5 shows a left side elevational view thereof; FIG. 6 . shows a top plan view thereof; FIG. 7 shows a bottom plan view thereof; and, FIG. 8 shows a perspective bottom view thereof. The broken lines in the drawings form no part of the claimed design