FR647712A - Improvements to engraving processes - Google Patents

Improvements to engraving processes

Info

Publication number
FR647712A
FR647712A FR647712DA FR647712A FR 647712 A FR647712 A FR 647712A FR 647712D A FR647712D A FR 647712DA FR 647712 A FR647712 A FR 647712A
Authority
FR
France
Prior art keywords
engraving processes
engraving
processes
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Raymond N Getches
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 filed Critical
Application granted granted Critical
Publication of FR647712A publication Critical patent/FR647712A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/20—Screening processes; Screens therefor using screens for gravure printing
FR647712D 1924-01-08 1928-01-26 Improvements to engraving processes Expired FR647712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US685056A US1659949A (en) 1924-01-08 1924-01-08 Engraving process

Publications (1)

Publication Number Publication Date
FR647712A true FR647712A (en) 1928-11-30

Family

ID=24750607

Family Applications (1)

Application Number Title Priority Date Filing Date
FR647712D Expired FR647712A (en) 1924-01-08 1928-01-26 Improvements to engraving processes

Country Status (2)

Country Link
US (1) US1659949A (en)
FR (1) FR647712A (en)

Also Published As

Publication number Publication date
US1659949A (en) 1928-02-21

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