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Publication of FR849868ApublicationCriticalpatent/FR849868A/fr
B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
B41J31/00—Ink ribbons; Renovating or testing ink ribbons
B41J31/09—Ink ribbons characterised by areas carrying media for obliteration or removal of typing errors
FR849868D1939-02-041939-02-04Procédé et dispositif pour rendre invisibles les signes imprimés au moyen des machines à écrire, à calculer ou autres
ExpiredFR849868A
(fr)