CA312750A - Systeme de cartes de classification et d'index - Google Patents

Systeme de cartes de classification et d'index

Info

Publication number
CA312750A
CA312750A CA312750A CA312750DA CA312750A CA 312750 A CA312750 A CA 312750A CA 312750 A CA312750 A CA 312750A CA 312750D A CA312750D A CA 312750DA CA 312750 A CA312750 A CA 312750A
Authority
CA
Canada
Prior art keywords
record
card system
index card
index
card
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
CA312750A
Other languages
English (en)
Inventor
Thorleif Tollefsen Carl
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA312750A publication Critical patent/CA312750A/fr
Expired legal-status Critical Current

Links

CA312750A Systeme de cartes de classification et d'index Expired CA312750A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA312750T

Publications (1)

Publication Number Publication Date
CA312750A true CA312750A (fr) 1931-06-30

Family

ID=35272076

Family Applications (1)

Application Number Title Priority Date Filing Date
CA312750A Expired CA312750A (fr) Systeme de cartes de classification et d'index

Country Status (1)

Country Link
CA (1) CA312750A (fr)

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