Category:特許発明・実用新案分類目録並件名索引

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This is the category for the Japanese book 特許発明・実用新案分類目録並件名索引.
日本語: 特許発明・実用新案分類目録並件名索引
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Media in category "特許発明・実用新案分類目録並件名索引"

The following 2 files are in this category, out of 2 total.