|
| US4467584 | 8 mars 1982 | 28 août 1984 | Robert C. Crites | Method and apparatus for attaching furring to columns |
| US4480419 | 25 juin 1982 | 6 nov. 1984 | | Method for attaching furring adjacent to columns |
| US4484427 | 20 avr. 1982 | 27 nov. 1984 | Robert C. Crites | Method and apparatus for attaching furring to columns |
| US4592187 | 31 août 1984 | 3 juin 1986 | Robert C. Crites | Method and apparatus for attaching furring to columns |
| US6911076 | 26 août 2003 | 28 juin 2005 | | Cementitious based structural lumber product and externally reinforced lightweight retaining wall system |
| US6976345 | 8 févr. 2002 | 20 déc. 2005 | | Cementitious based structural lumber product and externally reinforced lightweight retaining wall system |