CA211680A - Appareil electro-chimique a gravure - Google Patents

Appareil electro-chimique a gravure

Info

Publication number
CA211680A
CA211680A CA211680A CA211680DA CA211680A CA 211680 A CA211680 A CA 211680A CA 211680 A CA211680 A CA 211680A CA 211680D A CA211680D A CA 211680DA CA 211680 A CA211680 A CA 211680A
Authority
CA
Canada
Prior art keywords
etching apparatus
electrical etching
electrical
etching
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
CA211680A
Other languages
English (en)
Inventor
Henry Weeks Joseph
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEEKS PHOTO ENGRAVING CO
Original Assignee
WEEKS PHOTO ENGRAVING CO
Publication date
Application granted granted Critical
Publication of CA211680A publication Critical patent/CA211680A/fr
Expired legal-status Critical Current

Links

CA211680A Appareil electro-chimique a gravure Expired CA211680A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA211680T

Publications (1)

Publication Number Publication Date
CA211680A true CA211680A (fr) 1921-05-17

Family

ID=35105459

Family Applications (1)

Application Number Title Priority Date Filing Date
CA211680A Expired CA211680A (fr) Appareil electro-chimique a gravure

Country Status (1)

Country Link
CA (1) CA211680A (fr)

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