Multi-stable mechanical device employing compacted rods or disks
Multicolored globe adapted to make combinations between colors o
Multidimensional puzzle
Multifunctional cylindrical sliding block jigsaw puzzle
Multilayer puzzle
Multilayer three dimensional puzzle
Multiple image visual puzzle and method
Multiple jig-saw puzzle promotional lottery game and method of p
Multiple layer magnetic puzzle
Multiple maze game
Multiple maze game
Multiple tetrahedron picture display system
Multistable mechanical switching device
Musical jigsaw-type puzzle
Musical puzzle toy
Musical puzzle using sliding tiles
Mystic numbered geometrics
No glue puzzle frame
Notched golf club face
Novelty educational puzzle apparatus