Number | Date | Country | Kind |
---|---|---|---|
2-320038 | Nov 1990 | JPX | |
2-320040 | Nov 1990 | JPX | |
3-73882 | Mar 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2593148 | Huck | Apr 1952 | |
2797097 | Stobb | Jun 1957 | |
3221652 | Mestre | Dec 1965 | |
3729187 | Waibel | Apr 1973 |
Number | Date | Country |
---|---|---|
167861 | Jan 1986 | EPX |
194549 | Sep 1986 | EPX |
272802 | Jun 1988 | EPX |
276185 | Jul 1988 | EPX |
299645 | Jan 1989 | EPX |
2097820 | Mar 1972 | FRX |
Entry |
---|
Patent Abstracts of Japan, vol. 12, No. 195 (M-705)(3042), Jun. 7, 1988 and JP-A-63 001 657 (Canon Inc.) Jan. 6, 1988. |