| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of correctly inserting a key into a keyhole even if the key is covered with a key cover. SOLUTION: The key cover 1 covers a main body of the key 2 from above a lug portion 20 of the key 2. A main body of the cover 1 is made of a transparent material. COPYRIGHT: (C)2009,JPO&INPIT
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