Number | Date | Country | Kind |
---|---|---|---|
3412270 | Apr 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2187512 | Capps | Jan 1940 | |
2530284 | Capps | Nov 1950 | |
2544495 | Franz | Mar 1951 | |
3184242 | Marcucci | May 1965 | |
3781020 | Batsch et al. | Dec 1973 | |
3877705 | Joschko et al. | Apr 1975 | |
4531207 | Redlich et al. | Jul 1985 |
Number | Date | Country |
---|---|---|
1180156 | Oct 1964 | DEX |
2319407 | Nov 1974 | DEX |
2548263 | May 1976 | DEX |
2811888 | Sep 1979 | DEX |
2231471 | Dec 1974 | FRX |
Entry |
---|
"Micromachining Videodisc Grooves and Signals", Guatrachihi et al., RCA Review, 3/82. |