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 |
| 5865130 | Self-cleaning thermal oxidizer An apparatus for self cleaning a thermal oxidizer that is thermally treating and decontaminating gases is disclosed. The apparatus for self cleaning the thermal oxidizer can clean the accumulated dust out from inside the thermal oxidizer without requiring... | 02/02/1999 |
