1931/en: Unterschied zwischen den Versionen
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== Deaths == | == Deaths == | ||
*[[Piguet, Henri Louis|Henri Louis Piguet]] died on [[February 9|9th February]], [[1931/en|1931]]. | |||
Version vom 7. Februar 2014, 23:42 Uhr
| 1930 << 1931 >> 1932 |
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Events
- On 11th January, 1930, Léon Hatot was awarded the main patent No. 704.910 for the Rolls-watch automatic winding mechanism. The additional patents Nos. 38.984, 39.523 and 39.581 were awarded to him on 30th November, 1931.
Births
- Siegfried Möckel was born on 28th March, 1931.
- Gérald Charles Genta was born on 1st May, 1931 in Geneva.
Deaths
- Henri Louis Piguet died on 9th February, 1931.