|
| US3983673 | 14 Mar 1975 | 5 Oct 1976 | | Volumic construction element of generally rectangular parallelepiped shape |
| US4024687 | 26 Jun 1975 | 24 May 1977 | | Architectural system having post-tensioned elements |
| US4100705 | 10 Feb 1977 | 18 Jul 1978 | | Precast building structure |
| US4288963 | 27 Mar 1979 | 15 Sep 1981 | | Triangular column arrangement and method |
| US4462191 | 3 May 1982 | 31 Jul 1984 | | Prefabricated dwelling of the modular type |
| US4598515 | 29 Feb 1984 | 8 Jul 1986 | | Pre-cast building structure |
| US4603853 | 26 Ago 1983 | 5 Ago 1986 | | Modular frame structure and building system |
| US5007220 | 2 Dic 1988 | 16 Abr 1991 | | Non-periodic and periodic layered space frames having prismatic nodes |
