Number | Name | Date | Kind |
---|---|---|---|
1381437 | Smith | Jun 1921 | |
2853347 | Cooper, Jr. | Sep 1958 | |
3538575 | Roland | Nov 1970 | |
3647174 | Le Rouax | Mar 1972 | |
3918478 | Le Rouax | Nov 1975 | |
3925876 | Curtis | Dec 1975 | |
4437643 | Brakhage, Jr. et al. | Mar 1984 |
Number | Date | Country |
---|---|---|
122877 | Dec 1946 | AUX |
569384 | Jan 1959 | CAX |
Entry |
---|
1978, "Official Oil Well Drilling & Production Equipment Catalogue", p. 1219. |
Hydril Equipment Catalogue, #812, p. 11. |