Portal:Anniversaries/April 14

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1629 — Dutch astronomer Christiaan Huygens is born. He built the first pendulum clocks and pioneered pocket watches.
1889 — German watchmaker Georg Friedrich Roskopf, inventor of the Roskopf escapement, dies.
1956 — Rolex shows the first Day-Date at the Basel Fair.
1988 — Automatic quartz technology is unveiled at Baselworld by both Seiko and Jean d'Eve.
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