| 摘要 |
PROBLEM TO BE SOLVED: To provide a code number guide tool for easily deriving a code number from a keyword. SOLUTION: On a mount, a keyword frame and number frames for deriving a code number are provided, and in each number frame, alphabets and hiragana characters are dividedly disposed. An answer derived from a keyword is sought from characters in the number frames, and a code number is brought out. In addition, a structure is provided such that a part of the keyword frame can be peeled off, thus making it difficult for a third party to be decoded. The code number guide tool has above features. COPYRIGHT: (C)2007,JPO&INPIT
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