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Priority to ES0068695UpriorityCriticalpatent/ES68695Y/en
Publication of ES68695UpublicationCriticalpatent/ES68695U/en
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Publication of ES68695YpublicationCriticalpatent/ES68695Y/en
An indicator device of the fertile and sterile periods of the woman, characterized in that it is constituted essentially by three discs, and a fourth disc around an axis like the others of semicircular form, appearing in the smaller of the discs a scale in the that appear on the days of the month on which the short and long periods are to coincide, with the previous disc, which is slightly smaller, a tab for its manipulation, and finally, the smallest disc with the indication of the periods shorter and dates of the beginning of the fertile days, being placed on it a disk of semicircular form provided by a window through which appears the indication of the fertile days. (Machine-translation by Google Translate, not legally binding)
ES0068695U1958-09-261958-09-26
Indicator device for fertile and sterile periods in women
ExpiredES68695Y
(en)