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US 7,018,092 B2Granted
Spiral spring for time measuring device
AssigneeFranck Muller Watchland SA
InventorFrancesco Müller
Life of this patent
Estimating the term…
Abstract
A spiral spring for use in connection with horology instruments is disclosed which includes a spiral spring and a collet which are produced in one piece without molecular discontinuity.
Claims8
A spiral spring for use in a time measuring device comprising a spiral spring body, collet, a terminal curve and a stud produced in one piece and without molecular discontinuity between said spiral spring body, said collet, said terminal curve and said stud.
Dependencies are inferred from the claim text.