HOURIET - Jaques Frédéric, Paris (to 1768), Le Locle

 

1743 : born

1830: died

One of the ablest swiss makers.

Promoted precision horology at Le Locle.

Started a factory with David COURVOISIER.

1814: Published an article on the isochronismof spiral springs

Devised the spherical balance spring

 

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