FR714485A - Improvements to punch card checking machines used in tabulating machines or statistical machines - Google Patents

Improvements to punch card checking machines used in tabulating machines or statistical machines

Info

Publication number
FR714485A
FR714485A FR714485DA FR714485A FR 714485 A FR714485 A FR 714485A FR 714485D A FR714485D A FR 714485DA FR 714485 A FR714485 A FR 714485A
Authority
FR
France
Prior art keywords
machines
statistical
tabulating
punch card
card checking
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
Other languages
French (fr)
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.)
Tabulating Machine Co
Original Assignee
Tabulating Machine Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tabulating Machine Co filed Critical Tabulating Machine Co
Application granted granted Critical
Publication of FR714485A publication Critical patent/FR714485A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K5/00—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
FR714485D 1930-03-13 1931-03-12 Improvements to punch card checking machines used in tabulating machines or statistical machines Expired FR714485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US435455A US2043280A (en) 1930-03-13 1930-03-13 Card verifier

Publications (1)

Publication Number Publication Date
FR714485A true FR714485A (en) 1931-11-14

Family

ID=23728472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714485D Expired FR714485A (en) 1930-03-13 1931-03-12 Improvements to punch card checking machines used in tabulating machines or statistical machines

Country Status (4)

Country Link
US (1) US2043280A (en)
DE (1) DE719875C (en)
FR (1) FR714485A (en)
GB (1) GB374511A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB654074A (en) * 1947-09-23 1951-06-06 British Tabulating Mach Co Ltd Improvements in or relating to apparatus for verifying perforated record cards
US2788663A (en) * 1954-05-17 1957-04-16 Ibm Electronic verifier

Also Published As

Publication number Publication date
US2043280A (en) 1936-06-09
DE719875C (en) 1942-04-25
GB374511A (en) 1932-06-13

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