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[[Dunn]] was founded in [[1921]] and is between the fountain pen golden age producers, when every company was founded on the basis of some sort of the technical innovation. In [[Dunn]]'s case the invention was a pump filling system very similar to the [[stantuffo tuffante|one]] used by [[OMAS]] in the [[Lucens]] many years later. That allowed the company to obtain a good market share.

The ''Dunn'' was founded in [[1921]], and was one of the many manufacturers born in the golden age of the American fountain pen, when virtually every company was founded on the basis of the invention of some technical innovation. In the case of ''Dunn'', the invention that gave life to the company was the filling mechanism, which, due to its effectiveness, allowed it to obtain good market shares.