Number | Name | Date | Kind |
---|---|---|---|
2457129 | Collings | Dec 1948 | |
3253288 | Nagin | May 1966 | |
3253289 | Nagin | May 1966 | |
3308595 | Markow | Mar 1967 | |
4282619 | Rooney | Aug 1981 | |
4289420 | Davis et al. | Sep 1981 | |
4620400 | Richard | Nov 1986 | |
4625354 | Richard | Dec 1986 | |
4649588 | Taylor | Mar 1987 | |
4709435 | Stemler et al. | Dec 1987 | |
4912795 | Johnson | Apr 1990 | |
5033147 | Svensson | Jul 1991 | |
5414885 | Berlin et al. | May 1995 | |
5425152 | Teron | Jun 1995 |
Number | Date | Country |
---|---|---|
2510154 | Jan 1983 | FRX |
2547844 | Dec 1984 | FRX |
1587224 | Apr 1981 | GBX |
Entry |
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". . . More Money for Roads? It's Possible", Engineering News Record, Jan. 30, 1958, p. 22. |