He founded the firm Ielli for machining of all kinds.
Designed a reversing gear dry patented throughout Europe and then sold to the agricultural consortium of Rome.
Beginning production rocker for Ruggerini engines and production groups rocker for VM engines.
Beginning production for Grandi Motori Trieste.
Production rocker Lamborghini tractors.
Production rocker for diesel engine Ducati.
Beginning production rocker Lombardini engines and Sernagiotto.
Beginning production rocker Fincantieri Trieste and Slanzi Engines.
Production rocker for Iveco France (Bourbon Lancy).
Beginning production groups rocker for Moto Morini and groups of rockers for Isotta Fraschini.
Beginning production groups rocker for Yanmar Italy and production fork for gearbox Scania.