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32 14951 | Dec 1982 | DE |
0 883 114 | Dec 1998 | EP |
Entry |
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Patent Abstracts of Japan vol. 018, No. 293 (P-1747), Jun. 3, 1994 & JP 06 052558 A (Sharp Corp), Feb. 25, 1994 *abrégé*. |
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