Number | Name | Date | Kind |
---|---|---|---|
3207842 | Flagle | Sep 1965 | |
3437873 | Eggert | Apr 1969 | |
3736377 | Warren Jr. | May 1973 | |
4400724 | Fields | Aug 1983 | |
4494144 | Brown | Jan 1985 |
Number | Date | Country |
---|---|---|
208781 | Dec 1982 | JPX |
Entry |
---|
Introducing Luma, Telephony, Jun. 9, 1986, pp. 42-43. |