Piccardi
{{PatentInfo |Inventor=Gustav A. Lundmark |Assignee=Gustav A. Lundmark |Country=US |ApplicationNum=540397 |ApplicationDate=1922-03-02 |PatentNum=1479996 |PatentDate=1924-01-08 |PriorityDate=1922-03-02 |Titolo=Combined fountain pen and lead pencil |Marc...