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Priority claimed from CH7024259Aexternal-prioritypatent/CH369152A/en
Application filedfiledCritical
Priority to FR790247ApriorityCriticalpatent/FR1228395A/en
Application grantedgrantedCritical
Publication of FR1228395ApublicationCriticalpatent/FR1228395A/en
B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
B41M5/00—Duplicating or marking methods; Sheet materials for use therein
B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
FR790247A1959-03-021959-03-24
Process for making copy sheets and copy sheets conforming to those obtained by the process or similar process
ExpiredFR1228395A
(en)