| 2877822 | Hydraulically operable reciprocating motor driven swage for restoring collapsed pipe | |||
| 2851112 | Casing protector | |||
| 2812025 | Expansible liner | |||
| 2762436 | Methods of lowering pipe within a well bore | |||
| 2447624 | Indicator mounting bracket | |||
| 1966248 | Method of welding and setting pipe in wells | |||
| 1880218 | Method of lining oil wells and means therefor | |||
| 1769350 | Device for expanding collapsed casings | |||
| 1117737 | N/A | |||
| 0958517 | N/A | |||
| 0375259 | N/A |