Number | Date | Country | Kind |
---|---|---|---|
2-48830 | Feb 1990 | JPX | |
2-264251 | Oct 1990 | JPX | |
2-264252 | Oct 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3434085 | Gang | Mar 1969 | |
3566323 | Graf et al. | Feb 1971 | |
3787790 | Hull | Jan 1974 | |
4282567 | Voigt | Aug 1981 |
Number | Date | Country |
---|---|---|
518715 | Oct 1981 | AUX |
922423 | Jan 1955 | DEX |
3123006 | Jan 1983 | DEX |
1490564 | Jun 1967 | FRX |
53-53850 | Dec 1978 | JPX |
55-77115 | Jun 1980 | JPX |
57-130402 | Aug 1982 | JPX |
60-7448 | Mar 1985 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 4, No. 130 (E-25) (612) Sep. 12, 1980, & JP-A-55 83210 (Nippon Denshi K.K.). |