| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in the conventional mail post such as overflow at a feeding port caused by the filling of the mail post to the full capacity during the short period of staying outside the house or substantial damage to mails which drop down from the withdrawal port and for example are wetted in rains. SOLUTION: A frame is built outside the mail post and a supplemental bag with a rubber attached to the tip thereof is put over the frame to allow receiving of more mails securely into the bag.
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