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Individual
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Individual
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Priority to ES0271635ApriorityCriticalpatent/ES271635A1/en
Publication of ES271635A1publicationCriticalpatent/ES271635A1/en
IMPROVEMENTS IN EXTRACTOR APPLIANCES FOR OBSTETRICS, essentially characterized by having in the crosshead of the tractor system, which takes the suction cup to its end, an air intake valve that regulates the pressure of the device at will. (Machine-translation by Google Translate, not legally binding)
ES0271635A1961-10-301961-10-30Improvements in extractor appliances for obstetrics (Machine-translation by Google Translate, not legally binding)
ExpiredES271635A1
(en)