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 |
| 7395998 | Picture hanger for use with gypsum board A picture hanger for use with gypsum board comprises a strip of steel bent into a V to provide two legs. The first leg is arcuate and functions as an anchor upon insertion into the gypsum board. The second leg is straight, with a hook at its terminus for hanging pic... | 07/08/2008 |
