| Number | Date | Country | Kind |
|---|---|---|---|
| 6117915 | May 1986 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D258654 | Levy | Mar 1981 | |
| D258655 | Levy | Mar 1981 | |
| D274798 | O'Hara et al. | Jul 1984 | |
| D297949 | Yubisui et al. | Oct 1988 |
| Entry |
|---|
| Business Communication Products Division/3M-Nov. 1983, p. 1 (3M Whisper Reader Communications Terminal). |