Number | Name | Date | Kind |
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3676677 | Condas et al. | Jul 1972 | |
4031542 | Anderson | Jun 1977 | |
4533950 | Harshbarger | Aug 1985 | |
4667109 | Kano | May 1987 | |
4744666 | Oshida et al. | May 1988 | |
4798962 | Matsumoto et al. | Jan 1989 | |
5194744 | Aoki et al. | Mar 1993 |
Number | Date | Country |
---|---|---|
2356925 | Jan 1978 | FRX |
2672700 | Aug 1992 | FRX |
Entry |
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Patent Abstracts of Japan, vol. 14, No. 434 (P-1107) 18 Sep. 1990 & JP, A, 02 170 193 (Sony Corp), Susumu. |