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1. (WO2018015277) INDEX KEY

Pub. No.:    WO/2018/015277    International Application No.:    PCT/EP2017/067772
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Fri Jul 14 01:59:59 CEST 2017
IPC: G04B 18/02
Applicants: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD
Inventors: KAELIN, Laurent
SCHLUP, Fabien
Title: INDEX KEY
Abstract:
The invention relates to an index key, the arms of which allow guaranteed balance spring clearance even in the event of an impact.