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Riga 4:
Riga 4: − + − + − +
nessun oggetto della modifica
|Country=US
|Country=US
|ApplicationNum=634831
|ApplicationNum=634831
|ApplicationDate=1932-09-06
|ApplicationDate=1932-09-26
|PatentNum=1950364
|PatentNum=1950364
|PatentDate=1933-10-24
|PatentDate=1934-03-06
|PriorityDate=1932-09-06
|PriorityDate=1932-09-26
|Titolo=Fountain pen feed
|Titolo=Fountain pen feed
|Marca=Parker
|Marca=Parker