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[[Image:1927-09-Carter-Pen-Inx.jpg|thumb|left|Advertisement of 1927, with the slogan ''You know the ink'']]
[[Image:1927-09-Carter-Pen-Inx.jpg|thumb|left|Advertisement of 1927, with the slogan ''You know the ink'']]
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Anyway the [[Carter]] pens were of excellent quality (with nothing to envy to the most famous ones done by [[Waterman]], [[Sheaffer]] and [[Parker]]). The [[De Witt-La France]] owned also some significant patents, one for a very functional and easy to produce spring clip ({{FPO Patent|1350412}}), another one for a tethered [[lever filler]] system ({{FPO Patent|1209978}}), that allowed to limit vertically the travel of the lever, and another one for an efficient feeder ({{FPO Patent|1340277}}), all these features can be found on [[Carter]] pens.
Anyway the [[Carter]] pens were of excellent quality (with nothing to envy to the most famous ones done by [[Waterman]], [[Sheaffer]] and [[Parker]]). The [[De Witt-La France]] owned also some significant patents, one for a very functional and easy to produce spring clip ({{FPO Patent|1350412}}), another one for a tethered [[lever filler]] system ({{FPO Patent|1209978}}), that allowed to limit vertically the travel of the lever, and another one for an efficient feeder ({{FPO Patent|1340277}}), all these features can be found on [[Carter]] pens.
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[[Image:Carter-Flattop-Coral.jpg|thumb|A [[Carter]]'s [[lever filler]] [[flattop]] model]]
[[Image:Carter-Flattop-Coral.jpg|thumb|A [[Carter]]'s [[lever filler]] [[flattop]] model]]