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 |
| 5074474 | Method and equipment for producing bioactive suspensions Biological material is suspended in a liquid and, in the presence of reverberative bodies suspended in the suspension of biological material, subjected to ultrasound thereby to disintegrate the biological material. The disintegration is conducted in a sph... | 12/24/1991 |
