The ornamental design for a suctioncanistermountingbracket, substantially as shown and described.
FIG. 1 is a front perspective view of the suction canister mounting bracket;
FIG. 2 is a front perspective view of the suction canister mounting bracket without the transparent coverage;
FIG. 3 is a front elevation view of FIG. 2;
FIG. 4 is a rear elevation view of FIG. 2;
FIG. 5 is a left side elevation view of FIG. 2;
FIG. 6 is a right side elevation view of FIG. 2;
FIG. 7 is a top plan view of FIG. 2; and,
FIG. 8 is a bottom plan view of FIG. 2.
The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.