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Priority to ES0082810UpriorityCriticalpatent/ES82810Y/en
Publication of ES82810UpublicationCriticalpatent/ES82810U/en
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Publication of ES82810YpublicationCriticalpatent/ES82810Y/en
Improved rowing of inverted blade, characterized by being made of several pieces of appropriate material and joined by suitable colloids and whose blades are arranged in such a way that they remain in planes perpendicular to each other, with what is achieved that the blade that is not introduced in the water, does not offer resistance in its advance, since it presents its profile instead of the front. (Machine-translation by Google Translate, not legally binding)
Improvements in the stretched steps through magnesium or alloy pieces based on magnesium. (Machine-translation by Google Translate, not legally binding)
Improvements in rotary shears to cut metal plates or other material according to straight, curved or mixed lines (Machine-translation by Google Translate, not legally binding)