FR828530A - Perfectionnements aux vérificatrices pour cartes perforées - Google Patents

Perfectionnements aux vérificatrices pour cartes perforées

Info

Publication number
FR828530A
FR828530A FR828530DA FR828530A FR 828530 A FR828530 A FR 828530A FR 828530D A FR828530D A FR 828530DA FR 828530 A FR828530 A FR 828530A
Authority
FR
France
Prior art keywords
punch card
card checkers
checkers
punch
checkers improvements
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
English (en)
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.)
Compagnie des Machines Bull SA
Original Assignee
Compagnie des Machines Bull SA
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 Compagnie des Machines Bull SA filed Critical Compagnie des Machines Bull SA
Application granted granted Critical
Publication of FR828530A publication Critical patent/FR828530A/fr
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Lock And Its Accessories (AREA)
FR828530D 1938-10-28 1937-10-29 Perfectionnements aux vérificatrices pour cartes perforées Expired FR828530A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC2799D DE921286C (de) 1938-10-28 1938-10-28 Pruefmaschine fuer Lochkarten

Publications (1)

Publication Number Publication Date
FR828530A true FR828530A (fr) 1938-05-19

Family

ID=7012981

Family Applications (1)

Application Number Title Priority Date Filing Date
FR828530D Expired FR828530A (fr) 1938-10-28 1937-10-29 Perfectionnements aux vérificatrices pour cartes perforées

Country Status (3)

Country Link
US (1) US2272916A (fr)
DE (1) DE921286C (fr)
FR (1) FR828530A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270860B (de) * 1959-12-24 1968-06-20 Ibm Lichtdrucker mit Kathodenstrahlroehre und Leuchtschirm-Fotografiergeraet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE562156A (fr) * 1956-11-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270860B (de) * 1959-12-24 1968-06-20 Ibm Lichtdrucker mit Kathodenstrahlroehre und Leuchtschirm-Fotografiergeraet

Also Published As

Publication number Publication date
US2272916A (en) 1942-02-10
DE921286C (de) 1954-12-13

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