The ornamental design for a sap collector, as shown and described.
FIG. 1 is an oblique view of a sap collector showing my new design;
FIG. 2 is a rear view thereof,
FIG. 3 is a top view thereof,
FIG. 4 is a right side view thereof,
FIG. 5 is a left side view thereof,
FIG. 6 is a front view thereof, and,
FIG. 7 is a bottom view thereof.
The dashed line showing of structural lines is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.
CORRECTIVE ASSIGNMENT TO CORRECT THE DOCUMENT ATTACHED TO THE FILING PREVIOUSLY RECORDED ON REEL 039425 FRAME 0752 ASSIGNOR S HEREBY CONFIRMS THE ASSIGNMENT