发明名称 |
Method for taking directions and timepiece intended to make use of this method |
摘要 |
According to this method the longitude of the place where one is situated on the surface of the earth is determined by comparing the local time with the time of a reference time zone, and the latitude of the place where one is situated is determined by measuring the inclination of the earth's magnetic field in relation to the horizontal.
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申请公布号 |
US5598381(A) |
申请公布日期 |
1997.01.28 |
申请号 |
US19940355338 |
申请日期 |
1994.12.12 |
申请人 |
ASULAB S.A. |
发明人 |
BORNAND, ETIENNE;DINGER, RUDOLF |
分类号 |
G04G99/00;G01C21/00;G01C21/08;G04G9/00;G04G21/02;(IPC1-7):G04C11/02 |
主分类号 |
G04G99/00 |
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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