| 发明名称 |
Double sided keyboard for a telephone |
| 摘要 |
A portable telephone has a hinged flap with a keyboard on each side of the flap, allowing a user to dial or punch a telephone number when the flap is in the open position or when the flap is in the closed position.
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| 申请公布号 |
US6038313(A) |
申请公布日期 |
2000.03.14 |
| 申请号 |
US19970974875 |
申请日期 |
1997.11.20 |
| 申请人 |
NORTEL NETWORKS CORPORATION |
发明人 |
COLLINS, HUGH MARK A. |
| 分类号 |
H04M1/02;(IPC1-7):H04M1/00 |
主分类号 |
H04M1/02 |
| 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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