Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6244777 | One-use toothbrush assembly with external plug for releasing toothpaste from the interior, and method for using the same A disposable toothbrush assembly has a special hollow handle that contains enough toothpaste for one use. The handle includes a dispensing orifice, preferably at the head. An external plug seals the orifice, and thus also the toothpaste from the exterior.... | 06/12/2001 |
