FIG. 1 is a top perspective view of a first embodiment of an ornamental design for a multi-filament heater assembly;
FIG. 2 is a bottom perspective view of the first embodiment thereof;
FIG. 3 is a front view of the first embodiment thereof;
FIG. 4 is a rear view of the first embodiment thereof;
FIG. 5 is a left view of the first embodiment thereof;
FIG. 6 is a right view of the first embodiment thereof;
FIG. 7 is a top view of the first embodiment thereof; and
FIG. 8 is a bottom view of the first embodiment thereof.
FIG. 9 is a top perspective view of a second embodiment of an ornamental design for a multi-filament heater assembly;
FIG. 10 is a bottom perspective view of the second embodiment thereof;
FIG. 11 is a front view of the second embodiment thereof;
FIG. 12 is a rear view of the second embodiment thereof;
FIG. 13 is a left view of the second embodiment thereof;
FIG. 14 is a right view of the second embodiment thereof;
FIG. 15 is a top view of the second embodiment thereof; and
FIG. 16 is a bottom view of the second embodiment thereof.
FIG. 17 is a top perspective view of the outermost filament of the first embodiment of an ornamental design for a multi-filament heater assembly;
FIG. 18 is a bottom perspective view thereof;
FIG. 19 is a front view thereof;
FIG. 20 is a rear view thereof;
FIG. 21 is a left view thereof;
FIG. 22 is a right view thereof;
FIG. 23 is a top view thereof;
FIG. 24 is a bottom view thereof.
FIG. 25 is a top perspective view of the outermost filament of the second embodiment of an ornamental design for a multi-filament heater assembly;
FIG. 26 is a bottom perspective view thereof;
FIG. 27 is a front view thereof;
FIG. 28 is a rear view thereof;
FIG. 29 is a left view thereof;
FIG. 30 is a right view thereof;
FIG. 31 is a top view thereof;
FIG. 32 is a bottom view thereof.
FIG. 33 is a top perspective view of the innermost filament of the ornamental design for a multi-filament heater assembly;
FIG. 34 is a bottom perspective thereof;
FIG. 35 is a front view thereof;
FIG. 36 is a rear thereof;
FIG. 37 is a left thereof;
FIG. 38 is a right thereof;
FIG. 39 is a top view thereof;
FIG. 40 is a bottom view thereof.
FIG. 41 is a top perspective view of central filament clip of the ornamental design for a multi-filament heater assembly;
FIG. 42 is a bottom perspective view thereof;
FIG. 43 is a front view thereof;
FIG. 44 is a rear view thereof;
FIG. 45 is a left view thereof;
FIG. 46 is a right view thereof;
FIG. 47 is a top view thereof; and,
FIG. 48 is a bottom view thereof.