| Number | Name | Date | Kind |
|---|---|---|---|
| RE34429 | Baran et al. | Nov 1993 | |
| 3920895 | Vieri et al. | Nov 1975 | |
| 3920896 | Bishop et al. | Nov 1975 | |
| 3958088 | Vieri | May 1976 | |
| 4918722 | Duehren et al. | Apr 1990 | |
| 4974254 | Perine et al. | Nov 1990 | |
| 5068888 | Scherk et al. | Nov 1991 | |
| 5072309 | Brown | Dec 1991 | |
| 5136634 | Rae et al. | Aug 1992 | |
| 5196943 | Hersee et al. | Mar 1993 | |
| 5231510 | Worthington | Jul 1993 | |
| 5267303 | Johnson et al. | Nov 1993 | |
| 5341222 | Newman et al. | Aug 1994 |
| Number | Date | Country |
|---|---|---|
| 0459 793 A1 | Apr 1991 | EPX |
| 2 211 698 | Jul 1989 | GBX |
| Entry |
|---|
| "Faxfacts.RTM., Automated Information Retrieval by Fax/Voice" brochure, copia International LTD., Sep. 8, 1994. |