...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 |
| 7434779 | Conduit clamp A conduit clamp has an upper member and a lower member selectively connectable around a flexible tube. The upper member and lower member has interconnecting pivot points for pivotally connecting to each other. The lower member has a pair of opposing sidewalls with r... | 10/14/2008 |
| 7357425 | Barb clamp A barb clamp provides a leakproof connection of a flexible tube in a barbed fitting. The barb clamp includes a collet and sleeve. The barb fitting is configured to fit snugly within the tube. The collet is slid over the tube. Shelves on the interior surface of the c... | 04/15/2008 |