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meta>Gerd-Lothar Reschke m Text replace - 'series' to ' series' |
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Revision as of 14:58, 23 July 2021
- Heuer begins the series production of chronograph and receives the first patent for a stopwatch mechanism.
- Johann Adolf Hanhart opens a watch and jewelery business in Diessenhofen (Switzerland), which later becomes the watch manufacturer Hanhart.