# ISO 4057:1979 — Withdrawn and superseded ISO standards

For ISO 4057:1979, item title is Information processing — Data interchange on 6,30 mm (0.25 in) magnetic tape cartridge, 63 bpmm (1 600 bpi) phase-encoded; status code is 9599; successor is ISO 4057:1986; withdrawn / published date is 1979-05-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4057:1979 _(verified: appears in the quote below)_
- **Item title:** Information processing — Data interchange on 6,30 mm (0.25 in) magnetic tape cartridge, 63 bpmm (1 600 bpi) phase-encoded _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4057:1986
- **Withdrawn / published date:** 1979-05-01 _(verified: appears in the quote below)_

## What the source says

> 9764,IS,,ISO 4057:1979,"Information processing — Data interchange on 6,30 mm (0.25 in) magnetic tape cartridge, 63 bpmm (1 600 bpi) phase-encoded","Traitement de l'information — Cassette de bande magnétique de 6,30 mm (o,25 in) pour l'échange d'information par codage de phase à 63 bpmm (1 600 bpi)",1979-05-01,1,['35.220.23'],ISO/IEC JTC 1,9599,,[9765],['en'],31,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).