Portal:Anniversaries/April 27: Difference between revisions
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Latest revision as of 14:56, 23 July 2021
- 1957 — Breitling introduces the Superocean at the Swiss Industries Fair in Basel
- 1957 — Piaget introduces Cal. 9P, the thinnest watch movement to date and the foundation for the groundbreaking Altiplano series
- 1961 — A Bulova Accutron timer is used as part of the control system for the Explorer XI space mission