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Priority to ES1969152151UpriorityCriticalpatent/ES152151Y/en
Publication of ES152151UpublicationCriticalpatent/ES152151U/en
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Publication of ES152151YpublicationCriticalpatent/ES152151Y/en
Plotter of circle and circumference centers, characterized in that in a ruler, of variable shape and material, a longitudinal groove or traverse edge is prevented, perpendicular to a reference line symmetrically graduated on both sides from the point of intersection of the groove or tracing edge or its extension with the reference line, so that when equidistant points of said reference line are coincided with the ends of strings of a circle, a center is obtained by means of traces made through the tracer groove or edge . (Machine-translation by Google Translate, not legally binding)
ES1969152151U1969-09-261969-09-26
CIRCLE AND CIRCUMFERENCE CENTER TRACER.
ExpiredES152151Y
(en)
Improvements in the installations for the cutting of the glass and, in particular, of contained glass pieces. (Machine-translation by Google Translate, not legally binding)