| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 3 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eggleston Smith | 7 |
| #2 | Smith Eggleston | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US1805727A | Earth drilling apparatus | |
| US1926119A | Feeding pressure control for earth boring apparatus | |
| US1805678A | Self-seating device for drilling bits | |
| GB246461A | Improvements in or relating to feeding-pressure regulators for earth-boring bits | |
| US1558511A | Feeding-pressure regulator for earth-boring bits | |
| US1716092A | Core drilling and extracting device | |
| US1641206A | Well-drilling apparatus | |
| US1688994A | Method and apparatus for drilling holes | |
| CA325980A | Earth drilling apparatus | |
| CA281805A | Well drill | |
| CA266924A | Earth-boring bit mechanism |