发明名称 |
Timepiece having case formed of rock-like material |
摘要 |
A timepiece includes an outer caseband 3 formed entirely in one piece of a hard material which likewise includes a hub member 4 providing the timepiece dial, and a metallic inner caseband 16. An annular step 10 for positioning and glue fastening a crystal 9 surrounds the hub member. This arrangement gives the hard material the rigidity necessary to resist forces acting thereon during manufacture and subsequently when the watch is worn.
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申请公布号 |
US4853910(A) |
申请公布日期 |
1989.08.01 |
申请号 |
US19870081970 |
申请日期 |
1987.08.05 |
申请人 |
ETA SA FABRIQUES D'EBAUCHES |
发明人 |
MOCK, ELMAR |
分类号 |
G04B37/18;G04B19/06;G04B37/10;G04B37/14;G04B37/22 |
主分类号 |
G04B37/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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