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SCHREYER LUDWIG
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SCHREYER LUDWIG
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Un procedimiento para la fabricación mecánica de cuerpos huecos de vidrio o cristal especialmente de cilindros de hojas de vidrio o cristal por medio del aparato que se describe.
Mejoras en un aparato de alumbrado llamado "Acetilenógeno", para la producción del acetileno por medio del carburo de calcio convenientemente preparado.