A convertible gymnastic apparatus for doing push-lift movement or chest building movement makes use of a short cross bar having thereon a protruded bar extending upwardly and a swing frame comprising a longitudinal bar, to which a movable body is attached, and two gyrating arms having a baffle disposed...http://www.google.es/patents/US5120289?utm_source=gb-gplus-sharePatente US5120289 - Convertible gymnastic apparatus for doing push-lift movement or chest building movement
Convertible gymnastic apparatus for doing push-lift movement or chest ...
