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Watch
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Patent number 6,577,558
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Issue date Jun 10, 2003
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Giuseppe Ricci
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G04 - HOROLOGY
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Astronomic watch
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Patent number 6,272,076
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Issue date Aug 7, 2001
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Asulab S.A.
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Rudolf Dinger
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G04 - HOROLOGY
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Ultradian timer
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Patent number 6,259,655
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Issue date Jul 10, 2001
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William W. Witort
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G04 - HOROLOGY
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Biological timepiece
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Patent number 5,140,562
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Issue date Aug 18, 1992
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Martin C. Moore-Ede
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G04 - HOROLOGY
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Biorhythm display device
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Patent number 4,240,153
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Issue date Dec 16, 1980
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Raymond L. Merritt
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G06 - COMPUTING CALCULATING COUNTING
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3852949
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Patent number 3,852,949
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Issue date Dec 10, 1974
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G04 - HOROLOGY
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3815780
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Patent number 3,815,780
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Issue date Jun 11, 1974
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3651984
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Patent number 3,651,984
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Issue date Mar 28, 1972
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3533226
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Patent number 3,533,226
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Issue date Oct 13, 1970
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3472018
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Patent number 3,472,018
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Issue date Oct 14, 1969
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G04 - HOROLOGY
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3452535
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Patent number 3,452,535
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Issue date Jul 1, 1969
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G04 - HOROLOGY
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3395829
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Patent number 3,395,829
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3327470
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Patent number 3,327,470
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Issue date Jun 27, 1967
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G04 - HOROLOGY
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3255581
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Patent number 3,255,581
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Issue date Jun 14, 1966
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G04 - HOROLOGY
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3152437
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Patent number 3,152,437
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Issue date Oct 13, 1964
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G04 - HOROLOGY
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3031654
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Patent number 3,031,654
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Issue date Apr 24, 1962
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G04 - HOROLOGY
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3011303
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Patent number 3,011,303
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Issue date Dec 5, 1961
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G04 - HOROLOGY
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2979884
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Patent number 2,979,884
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Issue date Apr 18, 1961
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G04 - HOROLOGY