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Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 7030050 | Glass ceramic mass and use thereof The invention relates to a glass ceramic mass containing at least one oxide ceramic containing barium, titanium and at least one rare earth metal Rek; and at least one glass material containing at least one oxide with boron, at least one oxide with silicon and at le... | 04/18/2006 |