| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Moody Joseph F | 12 |
| #2 | Du Bois Virgil L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2009942A | Oil well apparatus | |
| US1790056A | Safety-hook device | |
| US1766920A | Oil-well apparatus | |
| US1966454A | Well equipment | |
| US1685713A | Oil-well elevator | |
| US1548543A | Well equipment | |
| US1541991A | Safety hook | |
| US1528124A | Elevator | |
| US1574404A | Gripping device | |
| US1422289A | Gripping device | |
| US1356458A | Gripping device | |
| US1300995A | Well-drilling appliance. |