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Application filed by Graf & CofiledCriticalGraf & Co
Application grantedgrantedCritical
Publication of AT132050BpublicationCriticalpatent/AT132050B/en
AT132050D1931-09-231931-09-23
Blueprint and drawing material for the production of true-to-scale blueprints, workpiece templates and original drawings.
AT132050B
(en)