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Publication of FR709920ApublicationCriticalpatent/FR709920A/en
B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
B44C1/22—Removing surface-material, e.g. by engraving, by etching
B44C1/221—Removing surface-material, e.g. by engraving, by etching using streams of abrasive particles
FR709920D1931-01-241931-01-24
Artistic engraving process, articles made by this process and tools necessary for its implementation
ExpiredFR709920A
(en)