Number | Name | Date | Kind |
---|---|---|---|
4275935 | Thompson et al. | Jun 1981 | |
4438822 | Russell | Mar 1984 | |
4456080 | Holbert | Jun 1984 | |
4465146 | Fitch | Aug 1984 | |
4465222 | Hester | Aug 1984 |
Number | Date | Country |
---|---|---|
2517613 | Nov 1975 | DEX |
0968309 | Dec 1980 | SUX |
Entry |
---|
N. L. Hycalog, Integral Blade Stabilizers, May 1, 1979. |
Drilco, Drilco Stabilizers, May 1, 1979. |