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| Number | Title | Issue Date |
| 4990026 | Process for lowering building structures In a process of lowering building structures, such as shutdown nuclear power plants or building structures which are to be erected as they are lowered, a caisson is constructed below the bed plate of the building structure. The caisson has a reinforced to... | 02/05/1991 |
| 4939878 | Process for sealing structural bodies or cavity-defining walls which may be subject to cracking In a method of sealing structural bodies or cavity-defining walls which may be subject to cracking, a sealing material is applied to the outside surface of the bodies or walls, the body or the cavity-defining walls are surrounded or enclosed by enclosing ... | 07/10/1990 |
| 4923338 | Process for lowering building structures The process herein disclosed to lower into the ground building structures, such as shutdown nuclear power plants or building structures to be erected as they are lowered. A caisson for supporting the building structure is provided below the bed plate of t... | 05/08/1990 |