Number | Name | Date | Kind |
---|---|---|---|
4118599 | Iwahara et al. | Oct 1978 | |
4905284 | Kwang | Feb 1990 | |
4933768 | Ishikawa | Jun 1990 |
Number | Date | Country |
---|---|---|
1175362 | Oct 1984 | CA |
4013398 | Oct 1990 | DE |
0 354 517 | Feb 1990 | EP |
WO919407 | Dec 1991 | WO |
WO 9206568 | Apr 1992 | WO |
Entry |
---|
EPO, European Search Report, Sep. 4, 1996, The Hague. |