ultrafacts:Paul Winchell was a ventriloquist, actor, and comedian whose career flourished in the 195
ultrafacts:Paul Winchell was a ventriloquist, actor, and comedian whose career flourished in the 1950s and 1960s.Winchell, who had medical training, was also an inventor, becoming the first person to build and patent a mechanical artificial heart, implantable in the chest cavity (US Patent #3097366)(Fact Source) Follow Ultrafacts for more facts -- source link