CA477069A - Record perforating machines - Google Patents

Record perforating machines

Info

Publication number
CA477069A
CA477069A CA477069A CA477069DA CA477069A CA 477069 A CA477069 A CA 477069A CA 477069 A CA477069 A CA 477069A CA 477069D A CA477069D A CA 477069DA CA 477069 A CA477069 A CA 477069A
Authority
CA
Canada
Prior art keywords
perforating machines
record perforating
record
machines
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
CA477069A
Other languages
French (fr)
Inventor
W. Mills Albert
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 CA477069A publication Critical patent/CA477069A/en
Expired legal-status Critical Current

Links

CA477069A Record perforating machines Expired CA477069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA477069T

Publications (1)

Publication Number Publication Date
CA477069A true CA477069A (en) 1951-09-18

Family

ID=35616709

Family Applications (1)

Application Number Title Priority Date Filing Date
CA477069A Expired CA477069A (en) Record perforating machines

Country Status (1)

Country Link
CA (1) CA477069A (en)

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