Number | Name | Date | Kind |
---|---|---|---|
2774935 | Rademakers et al. | Dec 1956 | A |
3968465 | Fukui et al. | Jul 1976 | A |
4103221 | Fukui et al. | Jul 1978 | A |
4456898 | Frischmann | Jun 1984 | A |
5841335 | Onishi et al. | Nov 1998 | A |
6014071 | Onishi et al. | Jan 2000 | A |
6304460 | Cuk | Oct 2001 | B1 |
20020033747 | Ito et al. | Mar 2002 | A1 |
20020097131 | Kondo | Jul 2002 | A1 |
Number | Date | Country |
---|---|---|
22 26 289 | Jan 1973 | DE |
0 744 757 | Nov 1996 | EP |
54-152957 | Oct 1979 | JP |
54152957 | Dec 1979 | JP |
61024211 | Feb 1986 | JP |
1-169905 | Jul 1989 | JP |
2000216033 | Aug 2000 | JP |
Entry |
---|
Patent abstracts of Japan, vol. 1997, No. 12, Dec. 25, 1997 1997-12-25; and JP 09-213546 A (Yaskawa Electric Corp.), Aug. 15, 1997 (1997-08-15)-Abstract only. |