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Application filed by Julien Henri LensfiledCriticalJulien Henri Lens
Priority to BE583668ApriorityCriticalpatent/BE583668A/en
Publication of BE583668ApublicationCriticalpatent/BE583668A/en
TOOL GRINDING MACHINE, IN PARTICULAR FOR THE GRINDING OF FINGER MILLS, EQUIPPED WITH A REMOVABLE OPTICAL DEVICE COUPLED THEREOF, AND OPTICAL DEVICE FOR USE WITH SUCH A TOOL GRINDING MACHINE.