1931/en: Unterschied zwischen den Versionen
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== Events == | == Events == | ||
| + | *On [[January 11|11th January]], [[1930/en|1930]], [[Hatot, Léon|Léon Hatot]] was awarded the main patent No. 704.910 for the [[Blancpain Rolls|Rolls]]-watch automatic [[winding mechanism]]. The additional patents Nos. 38.984, 39.523 and 39.581 were awarded to him on [[November 30|30th November]], [[1931/en|1931]]. | ||
== Births == | == Births == | ||
Version vom 6. Oktober 2011, 00:35 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
- Gérald Charles Genta was born on 1st May, 1931 in Geneva.