Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7320374 | Wellbore top drive systems | Robert Folk | 2008-01-22 |
| 7231969 | Wellbore top drive power systems and methods of use | Robert Folk | 2007-06-19 |
| 7228913 | Tubular clamp apparatus for top drives and methods of use | Robert Folk | 2007-06-12 |
| D543833 | Support link | Robert Folk | 2007-06-05 |
| 7222683 | Wellbore top drive systems | Robert Folk | 2007-05-29 |
| 7188686 | Top drive systems | Robert Folk | 2007-03-13 |
| D533196 | Guard for derrick apparatus | Robert Folk | 2006-12-05 |
| D532798 | Guard for derrick apparatus | Robert Folk | 2006-11-28 |
| D524833 | Access platform for a well top drive system | Robert Folk | 2006-07-11 |
| D524334 | Swivel body for a well top drive system | Robert Folk | 2006-07-04 |
| D523451 | Support link for wellbore apparatus | Robert Folk | 2006-06-20 |
| D523210 | Block becket for use in a wellbore derrick | Robert Folk | 2006-06-13 |
| D519136 | Swivel body for a top drive in a wellbore derrick | Robert Folk | 2006-04-18 |