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willkommen-in-germany:

Things you didn’t know were German: THE RING BINDER
The ring binder (der Leitz-Ordner) is a German invention. It was invented by Friedrich Soennecken in Bonn in 1886. The same year he also patented the hole punch (den Locher). The great innovation of adding a hole to the cover for easy handling was introduced by another German: Louis Leitz. 

willkommen-in-germany:

Things you didn’t know were German: THE RING BINDER

The ring binder (der Leitz-Ordner) is a German invention. It was invented by Friedrich Soennecken in Bonn in 1886. The same year he also patented the hole punch (den Locher). The great innovation of adding a hole to the cover for easy handling was introduced by another German: Louis Leitz.