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The first truly efficient and functional automatic filling system based on the compression of a rubber tank was the famous ''crescent filler'', designed by Roy [[Conklin]]' who patented it in 1901 ({{Cite patent|US|685258}}), which was introduced to the market by the company of the same name founded by him, the first example of the success of a brand due to the invention of an innovative filling mechanism.
The first truly efficient and functional automatic filling system based on the compression of a rubber tank was the famous ''crescent filler'', designed by Roy [[Conklin]]' who patented it in 1901 ({{Cite patent|US|685258}}), which was introduced to the market by the company of the same name founded by him, the first example of the success of a brand due to the invention of an innovative filling mechanism.
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[[Image:CrescentFillerSchema.svg|center|500px|Diagram of a pen with ''crescent filler'']]
[[Image:CrescentFillerSchema.svg|center|500px|Diagram of a pen with ''crescent filler'']]