The''pull filler'', also called the ''collar filler'', is a filling system that dates back to around 1906 (the patent is {{Cite patent|US|804847}} applied for in 1905), when [[Holland]], then still one of the most important manufacturers of fountain pens, introduced a model that used it. | The''pull filler'', also called the ''collar filler'', is a filling system that dates back to around 1906 (the patent is {{Cite patent|US|804847}} applied for in 1905), when [[Holland]], then still one of the most important manufacturers of fountain pens, introduced a model that used it. |