4. Metal treatment
  5. Compositions
  6. Heat treating

Pierre-Alain Walder

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Method of manufacture of a copper watch case

Metal treatment – Compositions – Heat treating
Patent

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Self-compensating balance spring for a mechanical oscillator of

Horology: time measuring systems or devices – Oscillating or reciprocating means – Balance wheel type
Patent

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Telescopically extensible bracelet clasp

Buckles – buttons – clasps – etc. – Strap tighteners – Accordion straps
Patent

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Wristwatch case including a back cover rising along the caseband

Horology: time measuring systems or devices – Cases
Patent

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Profile ID: LFUS-PAI-P-1180380

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