| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pistons and sealings | |
| #3 | Pipes | |
| #4 | Pumps | |
| #5 | Unspecified technologies | |
| #6 | Platform constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tschappat Sheridan P | 16 |
| Publication | Filing date | Title |
|---|---|---|
| US3050312A | Packing glands | |
| US2994549A | Packing glands | |
| US3002776A | Molded packing gland | |
| US2857183A | Reservoir gland stuffing box | |
| US2252240A | Packing device | |
| US2220359A | Well device | |
| US2168591A | Tubing head | |
| US2153852A | Tubing head | |
| US2185479A | Casing and tubing head | |
| US2185478A | Tubing and casing head | |
| US2116856A | Casing and tubing head | |
| US2073890A | Tubing head | |
| US2056543A | Tubing head | |
| US2025319A | Coupling | |
| US2001946A | Tubing head | |
| US1804290A | Coupling or tau for use in connection with oil well tubing |