Number | Name | Date | Kind |
---|---|---|---|
1958896 | Lesavoy et al. | May 1934 | |
3165590 | Brooks et al. | Jan 1965 | |
3482057 | Abbott et al. | Dec 1969 | |
3700813 | Colman | Oct 1972 | |
4255621 | Marheine | Mar 1981 | |
4277649 | Sheinbein | Jul 1981 | |
4451704 | Winkelman | May 1984 | |
4510349 | Segre-Amar | Apr 1985 | |
4720848 | Akiyama | Jan 1988 | |
4809321 | Morganstein et al. | Feb 1989 | |
4811382 | Sleevi | Mar 1989 | |
4850007 | Marino et al. | Jul 1989 | |
4910762 | Blom | Mar 1990 | |
4932042 | Baral et al. | Jun 1990 |
Number | Date | Country |
---|---|---|
1198843 | Dec 1985 | CAX |
3306313 | Aug 1984 | DEX |
57-87661 | Jun 1982 | JPX |
58-108855 | Jun 1983 | JPX |
2170377 | Jul 1986 | GBX |
Entry |
---|
"Scanning schemes in electronic telephone systems", Y. Jayachandra, Telephony, Nov. 20, 1978, pp. 40, 41, 44 [379/384]. |