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5341149 | Valimaa et al. | Aug 1994 | |
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5818398 | Tsuru et al. | Oct 1998 | |
5892490 | Asakura et al. | Apr 1999 |
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2 282 705 | Apr 1995 | GBX |
WO 9300721 | Jan 1993 | WOX |
WO 9707560 | Feb 1997 | WOX |
Entry |
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Patent Abstract of Japan; vol. 7, No. 251 (E-209); Nov. 8, 1983 & JP 58 137206 A (Sony); Aug. 15, 1983 *abstract*. |
Patent Abstracts of Japan; vol. 18, No. 188 (E-1532); Mar. 31, 1994 & JP 05 347507 A (Junkosha); Dec. 27, 1993 *abstract*. |