Number | Date | Country | Kind |
---|---|---|---|
5-309295 | Dec 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
5136655 | Bronson | Aug 1992 | |
5257349 | Alexander | Oct 1993 | |
5321800 | Lesser | Jun 1994 | |
5367626 | Morioka et al. | Nov 1994 | |
5414808 | Williams | May 1995 | |
5448375 | Cooper et al. | Sep 1995 | |
5467288 | Fasciano et al. | Nov 1995 |
Number | Date | Country |
---|---|---|
1-120598 | May 1989 | JPX |
3-011482 | Jan 1991 | JPX |
3-127269 | May 1991 | JPX |
5-108774 | Apr 1993 | JPX |
Entry |
---|
Rowe, S., "Business Telecommunications", 1988 pp. 119, 138. |