4. Horology: time measuring systems or devices
  5. Chronological
  6. With supplemental power source

Pierre Haefeli

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Chronograph coupling mechanism

Horology: time measuring systems or devices – Time interval – Mechanical stop time type
Reexamination Certificate

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Coupling device between a source of mechanical energy and an ele

Horology: time measuring systems or devices – Chronological – With supplemental power source
Patent

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Profile ID: LFUS-PAI-P-1512615

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