| 发明名称 |
Stereophonic pickup cartridge |
| 摘要 |
A stereophonic pickup cartridge includes both a rod-shaped armature and a disk-shaped armature, both of which magnetically interact with the pole pieces of coils to improve the magnetic efficiency of the cartridge.
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| 申请公布号 |
US4037060(A) |
申请公布日期 |
1977.07.19 |
| 申请号 |
US19750594302 |
申请日期 |
1975.07.09 |
| 申请人 |
NIPPON ATSUDENKI KABUSHIKI KAISHA T/A JAPAN PIEZO CO., LTD. |
发明人 |
UCHIDA, RYUICHI;TERASAKI, KAORU;OGIKUBO, MASARU |
| 分类号 |
H04R11/12;(IPC1-7):H04R11/12 |
主分类号 |
H04R11/12 |
| 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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