| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Medical technology | |
| #3 | Machine tools | |
| #4 | Machines | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Object sterilising | |
| #4 | Electrical vehicle propulsion | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dean Charles A | 18 |
| #2 | Robie Frederic H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2868510A | Under-reamers | |
| US2817751A | Welding electrode | |
| US2698737A | Core drill | |
| US2790625A | Under-reamers | |
| US2181395A | Rotary bit | |
| US2181394A | Earth drill bit head | |
| US2118397A | Core bit | |
| US2080117A | Roller shoulder bit | |
| US2080116A | Drill | |
| US1984867A | Core drill | |
| US1850386A | Core retainer | |
| US1896703A | Core drill | |
| US1814296A | Rotary drill bit | |
| CA133261A | Sterelizing cabinet | |
| US1007274A | Sterilizing-cabinet. | |
| US917556A | Trolley. | |
| CA339580A | Core drill | |
| CA32336A | Method of making striped paper bags |