Number | Name | Date | Kind |
---|---|---|---|
3089546 | Cochran | May 1967 | |
3229767 | Carter | Jan 1966 | |
3306359 | Edwards | Feb 1967 | |
3356140 | Young | Dec 1967 | |
3460617 | Brown | Aug 1969 | |
3763932 | Dinning | Oct 1973 | |
4049055 | Brown | Sep 1977 |
Entry |
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"Composite Catalog" of Oil Well Equipment, pp. 1041, 1054, 1056, 1978-79 edition. |