Puzzles forming platonic solids
Puzzles in two and three dimensions
Puzzles with decoding lenses and encoded images
Puzzles with pressure-sensitive stick-on pieces
Pyramid puzzle formed from tetrahedral and octaeder pieces conne
Pyramid puzzle system
Quarter card deck
Rake head and rake head/golf club combination for use in raking
Re-arrangable three-dimensional picture display incorporating a
Reciprocating manipulable ball puzzle
Recreational didactic multicombinable device
Reduced drag club head for a wood type golf club
Reflective golf ball putter alignment device
Regular polyhedron puzzles
Regular polyhedron-based logical puzzles
Regular solid multi-colored puzzle
Reinforced hollow metal golf club head
Reinforced metal golf club head
Reinforced metal golf club head
Reinforced metal shell golf club head, with keel