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US 2004/0174775 A1Published application
Spiral spring for time measuring device
AssigneeFrank Muller Watchland SA
InventorFrancesco Muller
Life of this patent
Estimating the term…
Abstract
Spiral spring for horology instrument produced all in one piece without molecular discontinuity with its collet.
Claims10
Spiral spring for time measuring device characterised in that it is made up of a spiral spring (11) produced in one piece without molecular discontinuity with its collet (12).
Dependencies are inferred from the claim text.