Piccardi
{{PatentInfo |Inventor=Davide Dante Zerollo |Assignee=Davide Dante Zerollo |Country=US |ApplicationNum=390565 |ApplicationDate=1929-09-05 |PatentNum=1790037 |PatentDate=1931-01-27 |PriorityDate=1929-01-10 |Titolo=Sealing apparatus |Marca=Zerollo |D...