Number | Date | Country | Kind |
---|---|---|---|
9421538 | Oct 1994 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
4278978 | Easterling | Jul 1981 | |
4856080 | Hulkko | Aug 1989 | |
5335010 | Lindemeier et al. | Aug 1994 |
Number | Date | Country |
---|---|---|
404357721 | Dec 1992 | JPX |
Entry |
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William C.Y. Lee "Mobile Cellular Telecommunications Systems" pp. 382-390, McGraw-Hill Book Company, 1989. |