Number | Date | Country | Kind |
---|---|---|---|
3430244 | Aug 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1206558 | Lowe | Nov 1916 | |
3742678 | Wyatt | Jul 1973 | |
3748713 | Tindale et al. | Jul 1973 | |
3827579 | Kendall | Aug 1974 | |
4204788 | Massey | May 1980 | |
4229255 | Isacc | Oct 1980 | |
4324523 | Zablocky | Apr 1982 | |
4481165 | Anderson et al. | Nov 1984 |
Number | Date | Country |
---|---|---|
3301814 | Jul 1984 | DEX |
0059473 | May 1977 | JPX |
0008788 | Jan 1985 | JPX |
Entry |
---|
"Technology", New Scientist, p. 296, 10/30/80. |