Number | Date | Country | Kind |
---|---|---|---|
57-54376 | Dec 1982 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
D275755 | Cottrill et al. | Oct 1984 | |
D276230 | Akiyama | Nov 1984 |
Entry |
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Computer Design, 1-1981, p. 95, OP-1/15 Keyboard. |
Computer Design, 4-1981, p. 262, CRT Data Terminal Keyboard. |