| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Electrically-conductive connections | |
| #5 | Belts or cables for driving |
| # | Name | Total Patents |
|---|---|---|
| #1 | Osmun Fred N | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2710064A | Safety device for line-suspended well equipment | |
| US2684118A | Safety support for line-suspended well equipment | |
| US2364869A | Jar | |
| US2318885A | Retriever | |
| US2336564A | Jar | |
| US2295683A | Adjuster | |
| US2202260A | Safety joint | |
| US2255857A | Hydraulic power transmitter control | |
| US2219151A | Cable socket | |
| US2172480A | Jar | |
| US2172481A | Jarring tool | |
| US2134796A | Pipe cutter | |
| US2202261A | Safety joint |