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Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 4687534 | Process of making a film faced expanded polystyrene foam board Film faced expanded polystyrene foam board is prepared by heat laminating expanded polystyrene board with a film composition comprising a high density polyethylene film layer and a heat activated low density adhesive film layer. This board is useful in th... | 08/18/1987 |