CA262190A - Dispositif a lire les perforations - Google Patents

Dispositif a lire les perforations

Info

Publication number
CA262190A
CA262190A CA262190A CA262190DA CA262190A CA 262190 A CA262190 A CA 262190A CA 262190 A CA262190 A CA 262190A CA 262190D A CA262190D A CA 262190DA CA 262190 A CA262190 A CA 262190A
Authority
CA
Canada
Prior art keywords
perforation
reading device
reading
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
CA262190A
Other languages
English (en)
Inventor
Roydon Peirce 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
Original Assignee
International Business Machines Corp
Publication date
Application granted granted Critical
Publication of CA262190A publication Critical patent/CA262190A/fr
Expired legal-status Critical Current

Links

CA262190A Dispositif a lire les perforations Expired CA262190A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA262190T

Publications (1)

Publication Number Publication Date
CA262190A true CA262190A (fr) 1926-06-29

Family

ID=35190140

Family Applications (1)

Application Number Title Priority Date Filing Date
CA262190A Expired CA262190A (fr) Dispositif a lire les perforations

Country Status (1)

Country Link
CA (1) CA262190A (fr)

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