Translations:Esterbrook/9/en
Jump to navigation
Jump to search
The feature that distinguished Esterbrook production was the interchangeable nib unit,[1] but it wasn't the first company offering this feature, that was already used by the Personal Point nibs made by Wahl Eversharp. Differently from Eversharp, Esterbrook used the feature to consent to its clients to easily change their nib as they please, in any moment and not just when buying the pen, helped by the low price of its cheap steel nibs.
- ↑ this feature was protected by the patents nº US-1939753 and nº US-1999177 registered respectively in 1933 and 1935, but applied in 1928 and 1933.