FR539861A - Electric metal engraving process - Google Patents

Electric metal engraving process

Info

Publication number
FR539861A
FR539861A FR539861DA FR539861A FR 539861 A FR539861 A FR 539861A FR 539861D A FR539861D A FR 539861DA FR 539861 A FR539861 A FR 539861A
Authority
FR
France
Prior art keywords
engraving process
electric metal
metal engraving
electric
metal
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
Louis Chantelot
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 FR539861A publication Critical patent/FR539861A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/06—Marking or engraving

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR539861D 1921-05-20 1921-05-20 Electric metal engraving process Expired FR539861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR539861T 1921-05-20

Publications (1)

Publication Number Publication Date
FR539861A true FR539861A (en) 1922-07-01

Family

ID=8929132

Family Applications (1)

Application Number Title Priority Date Filing Date
FR539861D Expired FR539861A (en) 1921-05-20 1921-05-20 Electric metal engraving process

Country Status (1)

Country Link
FR (1) FR539861A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774921A (en) * 1953-04-23 1956-12-18 Haloid Co Apparatus for electrostatically charging insulating image surfaces for electrophotography
US2892973A (en) * 1955-01-26 1959-06-30 Gen Dynamics Corp Apparatus for imparting electrostatic charges in electrophotography
US2980834A (en) * 1956-04-26 1961-04-18 Bruning Charles Co Inc Charging of photo-conductive insulating material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774921A (en) * 1953-04-23 1956-12-18 Haloid Co Apparatus for electrostatically charging insulating image surfaces for electrophotography
US2892973A (en) * 1955-01-26 1959-06-30 Gen Dynamics Corp Apparatus for imparting electrostatic charges in electrophotography
US2980834A (en) * 1956-04-26 1961-04-18 Bruning Charles Co Inc Charging of photo-conductive insulating material

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