| 摘要 |
PROBLEM TO BE SOLVED: To solve the trouble such as a troublesome opening and closing, an insufficient security or the like in a conventional door. SOLUTION: Keys for all doors for a detached house, a mansion, an apartment house or the like are manufactured as ones for a keyless door for an automobile. The door is given the security, and the door can also correspond even to securities. Since the key need not be inserted into the door, the door is opened and closed smoothly. COPYRIGHT: (C)2008,JPO&INPIT
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