CA370493A - Dispositif a perforer les cartes - Google Patents

Dispositif a perforer les cartes

Info

Publication number
CA370493A
CA370493A CA370493A CA370493DA CA370493A CA 370493 A CA370493 A CA 370493A CA 370493 A CA370493 A CA 370493A CA 370493D A CA370493D A CA 370493DA CA 370493 A CA370493 A CA 370493A
Authority
CA
Canada
Prior art keywords
perforating device
record perforating
record
perforating
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
CA370493A
Other languages
English (en)
Inventor
R. Pierce 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.)
International Business Machines Corp
Tabulating Machine Co
Original Assignee
International Business Machines Corp
Tabulating Machine Co
Publication date
Application granted granted Critical
Publication of CA370493A publication Critical patent/CA370493A/fr
Expired legal-status Critical Current

Links

CA370493A Dispositif a perforer les cartes Expired CA370493A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA370493T

Publications (1)

Publication Number Publication Date
CA370493A true CA370493A (fr) 1937-12-14

Family

ID=35371559

Family Applications (1)

Application Number Title Priority Date Filing Date
CA370493A Expired CA370493A (fr) Dispositif a perforer les cartes

Country Status (1)

Country Link
CA (1) CA370493A (fr)

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