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59-54400 | Apr 1984 | JP |
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Entry |
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Patent Abstracts of Japan, http://wwwl.ipdl.jpo.go.jp/PA1/result/detail/main/wAAAa09850DA405085484P1.htm. |
Patent Abstracts of Japan, http://www1.ipdl.jpo.go.jp/PA1/result/detail/main/wAAAa09850DA410175595P1.htm. |