Motorized swing

Motorized swing

Motorized treadmill speed changer

Motorized variable speed treadmill

Mountain climb and slide

Mountain climber fitness machine

Mounted spring device for resisting flexing

Mounting of pickup stylus

Movable surface apparatus, particularly for physical exercise an

Movable surface apparatus, particularly for physical exercise an

Moving artificial ski surface construction

Moving coil cartridge with magnetic means to affix stylus holder

Moving coil pickup cartridge with diaphragm coupling

Moving hand amusement and novelty device

Moving iron type cartridge

Multi function exercise machine

Multi function foldable exercise machine

Multi piece burial vault base and method of making the same

Multi purpose exercise bench

Multi-directional exercise device