CA222022A - Process of etching - Google Patents

Process of etching

Info

Publication number
CA222022A
CA222022A CA222022A CA222022DA CA222022A CA 222022 A CA222022 A CA 222022A CA 222022 A CA222022 A CA 222022A CA 222022D A CA222022D A CA 222022DA CA 222022 A CA222022 A CA 222022A
Authority
CA
Canada
Prior art keywords
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
CA222022A
Other languages
French (fr)
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 CA222022A publication Critical patent/CA222022A/en
Expired legal-status Critical Current

Links

CA222022A Process of etching Expired CA222022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA222022T

Publications (1)

Publication Number Publication Date
CA222022A true CA222022A (en) 1922-08-08

Family

ID=35117624

Family Applications (1)

Application Number Title Priority Date Filing Date
CA222022A Expired CA222022A (en) Process of etching

Country Status (1)

Country Link
CA (1) CA222022A (en)

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