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 |
| 6583827 | Electro-optical glazing structures having bi-directional control of electromagnetic radiation during total-reflection, semi-transparent and totally-transparent modes of operation Electro-optical glazing structures having bi-directional control of electromagnetic radiation during total-reflection, semi-transparent and totally-transparent modes of operation which are electrically-switchable for use in dynamically controlling electro... | 06/24/2003 |
| 6559903 | Non-absorptive electro-optical glazing structure employing composite infrared reflective polarizing filter An electro-optical glazing structure having reflection and transparent modes of operation for selectively reflecting and transmitting electromagnetic radiation without absorption, respectively. The electro-optical glazing structure comprising: an electro-... | 05/06/2003 |
| 6544678 | Metal-air fuel cell battery system employing metal-fuel cards Improved metal-air fuel cell battery systems having metal-fuel realized in the form of metal-fuel tape cartridges and metal-fuel cards, which can be either manually or automatically inserted within the power generation bay of the system. In order to produ... | 04/08/2003 |
