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Priority to ES0064476UpriorityCriticalpatent/ES64476Y/en
Publication of ES64476UpublicationCriticalpatent/ES64476U/en
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Publication of ES64476YpublicationCriticalpatent/ES64476Y/en
Improved curve for pneumatic transport of documents characterized by the upper radius of the curve is normal and a single radius, while the lower radius is composed of several sectors of different radius, being the midpoint of the curve of greater section that in its two extremes in which it is circular and of the same diameter as the rest of the pneumatic conduction. (Machine-translation by Google Translate, not legally binding)
ES0064476U1958-02-211958-02-21
Improved curve for pneumatic document transport lines
ExpiredES64476Y
(en)