???????? ??? ????????? ???.???????????? ??? ????????? ????? ??? ??????????????????????? - ?????? , ???????? ?????? , ????? ????????? ... , ?????? ?????? ???????Tractor Cassani model 40HP, at the Museo nazionale della scienza e della tecnologia Leonardo da Vinci of Milan The 1st three-position hitches had been experimented with in 1917. Just after H