CA292143A - Procede de fabrication de plaques gravees sur acier - Google Patents

Procede de fabrication de plaques gravees sur acier

Info

Publication number
CA292143A
CA292143A CA292143A CA292143DA CA292143A CA 292143 A CA292143 A CA 292143A CA 292143 A CA292143 A CA 292143A CA 292143D A CA292143D A CA 292143DA CA 292143 A CA292143 A CA 292143A
Authority
CA
Canada
Prior art keywords
making steel
steel etching
etching plates
plates
making
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
CA292143A
Other languages
English (en)
Inventor
Christian Janes John
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.)
T V ALLEN Co
Original Assignee
T V ALLEN Co
Publication date
Application granted granted Critical
Publication of CA292143A publication Critical patent/CA292143A/fr
Expired legal-status Critical Current

Links

CA292143A Procede de fabrication de plaques gravees sur acier Expired CA292143A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA292143T

Publications (1)

Publication Number Publication Date
CA292143A true CA292143A (fr) 1929-08-13

Family

ID=35228955

Family Applications (1)

Application Number Title Priority Date Filing Date
CA292143A Expired CA292143A (fr) Procede de fabrication de plaques gravees sur acier

Country Status (1)

Country Link
CA (1) CA292143A (fr)

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