Number | Name | Date | Kind |
---|---|---|---|
4656623 | Dalby et al. | Apr 1987 | |
4757267 | Riskin | Jul 1988 | |
4953204 | Cuschleg et al. | Aug 1990 | |
5036535 | Gechter | Jul 1991 | |
5062103 | Davidson et al. | Oct 1991 |
Entry |
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"AT&T Systems Ties Firms' Call Centers to Home Workers," Wall Street Journal, Jan. 19, 1991, p. B2. |