Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375662 | Hydraulic setting sleeve | Ralph H. Echols, Phillip T. Thomas | 1994-12-27 |
| 5343949 | Isolation washpipe for earth well completions and method for use in gravel packing a well | Dhirajlal C. Patel, Timothy F. LaBruyere | 1994-09-06 |
| 5332045 | Apparatus and method for placing and for backwashing well filtration devices in uncased well bores | Henry L. Restarick | 1994-07-26 |
| 5318117 | Non-rotatable, straight pull shearable packer plug | Ralph H. Echols | 1994-06-07 |
| 5311938 | Retrievable packer for high temperature, high pressure service | James D. Hendrickson, William David Henderson | 1994-05-17 |