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The ''bottom lever filler'', also called ''rear lever filler'', is a special lever filling system designed by [[Aurora]] and used from around 1930 for the [[International]] model, and later used also on the [[Novum]]. There are no known  variants of this system used by other manufacturers, even if there are several patents with similar mechanisms, except the [[switch filler]] of the [[Pilot]], which has some similarities, in particular with the variant of this system adopted later on the [[Superna]] model.

The ''bottom lever filler'', also called ''rear lever filler'', is a special lever filling system designed by [[Aurora]] and used from around 1930 for the [[Internazionale]] model, and later used also on the [[Novum]]. There are no known  variants of this system used by other manufacturers, even if there are several patents with similar mechanisms, except the [[switch filler]] of the [[Pilot]], which has some similarities, in particular with the variant of this system adopted later on the [[Superna]] model.

[[Image:levetta di fondo.jpg|thumb|250px|Diagram of a pen with ''bottom lever filler'']]

[[Image:levetta di fondo.jpg|thumb|250px|Diagram of a pen with ''bottom lever filler'']]