...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 |
| 7117873 | Lice and nit removal device A device for removing lice and nits from affected hair and scalp of an individual, has first and second movable blades, the first blade including a plurality of first saw teeth, the second blade including a plurality of second saw teeth, and means for movably retain... | 10/10/2006 |
| 6595219 | Hairbrush with retractable bristles A hairbrush comprising retractable bristles to ease removal of hair from the brush comprises an internal wedge and wheel mechanism actuated by a sliding button and link to the wheel. Alignment channels assure movement of the bristles through the perforate... | 07/22/2003 |
| 5875790 | Comb cutting guide A first comb has a graduated scale attached near a first end of the scale so that the scale can be pivoted outwardly and inwardly from the first comb. A cutting guide first end is pivotably attached to the second end of the graduated scale. The graduated ... | 03/02/1999 |