Number | Date | Country | Kind |
---|---|---|---|
1-139464 | May 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3541424 | Tada et al. | Nov 1970 | |
3596167 | Enge | Jul 1971 | |
3729650 | Cook | Apr 1973 | |
4087701 | Anderson | May 1978 | |
4392173 | Rubin | Jul 1983 |
Number | Date | Country |
---|---|---|
1225290 | Jun 1967 | DEX |
2106643 | May 1972 | FRX |
675267 | Nov 1964 | ITX |
28572 | Feb 1982 | JPX |
197711 | Nov 1977 | SUX |
1181094 | Sep 1986 | SUX |
Entry |
---|
Soviet Inventions Illustrated, Section U24, Week 9010, 18 Apr. 1990, No. 90-074166/10 and SU-A-1504676 (Elektrotech Inst) 21 Dec. 1987. |
Patent Abstracts of Japan, vol. 6, No. 140 (E-121)(1018) 29 Jul. 1982. |
Extract from a book entitled "ACCELERATOR", published Dec. 25, 1975, by Kumagai et al. |