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 |
| 5099881 | Flow dividing structure of mass flow controller A flow dividing structure for a mass flow controller includes a base having a main passage which includes an upsream circular passage, a downstream circular passage, and a tapering circular passage which connects the upstream and downstream circular passa... | 03/31/1992 |
