Number | Date | Country | Kind |
---|---|---|---|
3036973 | Oct 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3795764 | Altmann | Mar 1974 | |
4016366 | Kurata | Apr 1977 | |
4272788 | Ogita | Jun 1981 | |
4302837 | Tanaka et al. | Nov 1981 |
Number | Date | Country |
---|---|---|
2223432 | Dec 1973 | DEX |
Entry |
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"Multichannel Sound System for TV Broadcasting", Numaguchi et al., IEEE Consumer Electronics, 8/1981, pp. 366-370. |