Number | Name | Date | Kind |
---|---|---|---|
3833199 | Frake | Sep 1974 | |
4227672 | Cunningham | Oct 1980 | |
4722541 | Carlson et al. | Feb 1988 | |
5174909 | Ward | Dec 1992 |
Number | Date | Country |
---|---|---|
216404 | May 1924 | GBX |
259037 | Oct 1926 | GBX |
Entry |
---|
"Pilaster Forming", Symons Corporation, Mar. 1988. |
"Pilaster Forms", Symons Corporation, undated. |