Number | Date | Country | Kind |
---|---|---|---|
62-177679 | Jul 1987 | JPX | |
63-64271 | Mar 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3410958 | Cohen | Nov 1968 | |
3588360 | Knox | Jun 1971 | |
4068092 | Ikoma et al. | Jan 1978 | |
4513177 | Nishino et al. | Apr 1985 | |
4696032 | Levy | Sep 1987 |
Number | Date | Country |
---|---|---|
2221885 | Mar 1974 | FRX |
2161047 | Jan 1986 | GBX |
Entry |
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Patent Abstracts of Japan, vol. 8, No. 239 (E-276) [1676], Nov. 2, 1984; & JP-A-59 117 849 (Nippon Denshin Denwa Kosha) 07-07-1984. |