| 发明名称 |
PHONOGRAPH APPARATUS |
| 摘要 |
This invention embodies a linearly driven phonograph record tape having substantially parallel record grooves, and a novel apparatus for selecting the groove to be played by appropriate spring-drive tensioning means.
|
| 申请公布号 |
US3666275(A) |
申请公布日期 |
1972.05.30 |
| 申请号 |
USD3666275 |
申请日期 |
1970.01.23 |
| 申请人 |
BOLT BERANEK AND NEWMAN INC. |
发明人 |
JOHN C. HEINE;EDWARD M. KERWIN JR.;COLIN G. GORDON |
| 分类号 |
G11B33/06;(IPC1-7):G11B25/06 |
主分类号 |
G11B33/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
