Translations:Button filler/1/en

Filling systems

The button filler was introduced by Parker in 1913.^[1] The system was born from the need to find an alternative to the Sheaffer lever filler not copying the design thus avoiding all possible legal problems due to patents.

↑ at least as reported on this story of the initial Parker models, the first Parker patents related to loading, nº US-1346045 and nº US-1486246, are respectively from 1919 and 1922, certainly after the introduction, since the Duofold is also from 1922 and the system also appears in this 1916 advertising, in this discussion however is reported the purchase by the Parker of the patent nº US-787152, which is from 1905.

[1] t least as reported on this story of the initial Parker models, the first Parker patents related to loading, nº US-1346045 and nº US-1486246, are respectively from 1919 and 1922, certainly after the introduction, since the Duofold is also from 1922 and the system also appears in this 1916 advertising, in this discussion however is reported the purchase by the Parker of the patent nº US-787152, which is from 1905.

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