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Individual
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Individual
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Priority to ES0262986ApriorityCriticalpatent/ES262986A1/en
Publication of ES262986A1publicationCriticalpatent/ES262986A1/en
Improvements in the manufacture of air levels, characterized by the fact that the level itself is manufactured based on a hollow body of glass, which affects the shape of a barrel, so that the symmetrical widening that it presents in its central zone, allow to use the level in any position and easily level the air bubble between two parallel circles, which surround the body of the level and which are located in full perpendicular to the longitudinal axis thereof. (Machine-translation by Google Translate, not legally binding)
ES0262986A1960-11-221960-11-22Improvements in the manufacture of air levels (Machine-translation by Google Translate, not legally binding)
ExpiredES262986A1
(en)