Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Landis & Gyr AgfiledCriticalLandis & Gyr Ag
Application grantedgrantedCritical
Publication of AT168276BpublicationCriticalpatent/AT168276B/en
AT168276D1940-01-231948-08-16
Method and device for the production of a number roll with numbers that stand out plastically from the roll surface
AT168276B
(en)