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 |
| 3985220 | Tabulator apparatus for a typewriter carriage moving in steps of different length A tabulator apparatus for a typewriter whose carriage can be manually set to make carriage steps of different length corresponding to the width of types of different exchangeable type carriers. The apparatus includes a manually shiftable transmission conn... | 10/12/1976 |
