Number | Name | Date | Kind |
---|---|---|---|
4807154 | Scully et al. | Feb 1989 | |
5125075 | Goodale et al. | Jun 1992 | |
5181162 | Smith et al. | Jan 1993 | |
5247661 | Hager et al. | Sep 1993 | |
5276869 | Forrest et al. | Jan 1994 | |
5317683 | Hager et al. | May 1994 |
Entry |
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Method of confirming selected activities by recipients of electronic mail, Inventors: Heyen, et al., IBM Document No. AT988031 Oct., 1990. |