Magnetic shielding for timepiece balance spring

Device for protecting a timepiece balance spring (1) against interfering magnetic fields comprising a balance (2) made of amorphous ferromagnetic material.

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Bibliographische Detailangaben
1. Verfasser:	Dionne Jean-Francois
Format:	Patent
Sprache:	eng
Schlagworte:	HOROLOGY MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES PHYSICS TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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Beschreibung
Zusammenfassung:	Device for protecting a timepiece balance spring (1) against interfering magnetic fields comprising a balance (2) made of amorphous ferromagnetic material.