APERFEIÇOAMENTOS INTRODUZIDOS EM BICICLETA ELÍPTICA DOBRÁVEL
Bicycle with rear drive assembly for elliptical movement
BICYCLE WITH REAR DRIVE ASSEMBLY FOR ELLIPTICAL MOVEMENT
Bicycle with rear drive assembly for elliptical movement
Elliptical drive mechanism and a steering mechanism, applicable to velocipedes in general
ELLIPTICAL DRIVE MECHANISM AND A STEERING MECHANISM, APPLICABLE TO VELOCIPEDES IN GENERAL