Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5161129 | Tide watch A tide watch having a direct reading high tide indicator and a settable bezel for alignment with the high tide time on the watch dial so that the hour hand always indicates the approximate condition of the tide. The watch dial is formed with a semi-circul... | 11/03/1992 |
