| 摘要 |
PROBLEM TO BE SOLVED: To provide a washing device for surely removing urinary calculi on a urinal or a toilet bowl, whichever. SOLUTION: The washing device is provided in a supply pipe 4 which supplies washing water to a toilet bowl 3. It comprises urinary calculus removing agent 30 to be dissolved in the washing water flowing in the supply pipe 4. COPYRIGHT: (C)2006,JPO&NCIPI
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