Number | Name | Date | Kind |
---|---|---|---|
D230156 | Pahl et al. | Jan 1974 | |
D235349 | Kurozumi | Jun 1975 |
Number | Date | Country |
---|---|---|
2607868 | Sep 1976 | DEX |
Entry |
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Chilton's Electronic Component News, 6-1978, (1978 Nat'l. Computer Conference Issue), p. 7, "Lite Touch",.TM. Data Entry Panel. |