Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 5465290 | Confirming identity of telephone caller The invention provides a distributed information processing system for verifying the identities of telephone callers, in which data is stored in a first processing station and signal processing is performed by one or more speaker verification units locate... | 11/07/1995 |
