| 摘要 |
A mail box indicating device which permits a visual determination from a distance whether the mail box door has been opened. The mail box indicating device consists of a mail box with an upper and lower section separated by the mail box floor. A metallic strip is connected to the mail box floor in the lower section. The indicator means is attached at one end and has a magnet disposed at the other end which contacts the metallic strip until that end of the indicator means is released by opening the door of the mail box.
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