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Method for cutting watch crystals
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Issue date Jul 6, 2021
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The Swatch Group Research and Development Ltd.
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Jean-Luc Bazin
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B24 - GRINDING POLISHING
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Watch glass
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Patent number 10,466,651
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Issue date Nov 5, 2019
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Montres Tudor SA
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Gregory Schmidt
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G04 - HOROLOGY
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3561089
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Patent number 3,561,089
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Issue date Feb 9, 1971
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G04 - HOROLOGY
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3555812
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G04 - HOROLOGY
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3505807
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G02 - OPTICS
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3445913
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G04 - HOROLOGY
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3273228
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G04 - HOROLOGY
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3169306
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G04 - HOROLOGY
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3145459
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G04 - HOROLOGY
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3074156
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G04 - HOROLOGY
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3068558
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G04 - HOROLOGY
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3052906
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G04 - HOROLOGY
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3013330
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G04 - HOROLOGY
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2994949
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Patent number 2,994,949
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G04 - HOROLOGY
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2991545
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Patent number 2,991,545
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G04 - HOROLOGY
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2908967
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G04 - HOROLOGY
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2671295
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B24 - GRINDING POLISHING
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2659105
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2613494
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Patent number 2,613,494
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Issue date Oct 14, 1952
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G04 - HOROLOGY