| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Punching metal | |
| #4 | Sawing | |
| #5 | Accessories for machine tools | |
| #6 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mcevoy Joseph H | 12 |
| #2 | Mcevoy Jr Joseph Henry | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1867321A | Safety pressure head | |
| US1875632A | Universal casing head and gas saver | |
| US1867320A | Pump packing assembly and packing rings | |
| US1699798A | Process of making strainer buttons | |
| US1734040A | Packer for wells | |
| US1576669A | Screen-button-cutting apparatus | |
| US1511415A | Work-feeding mechanism for drill presses or the like | |
| US1154709A | Well-strainer. | |
| US874418A | Straining-plug. | |
| CA108010A | Well strainer | |
| US864673A | Well-strainer. | |
| US828956A | Well-strainer. |