| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Percussive tools | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Street cleaning | |
| #6 | Crop agriculture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henry Albert R | 13 |
| #2 | Wills Marion C | 6 |
| #3 | Cooke Ernest S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3063508A | Pavement breaking drill | |
| US2905168A | Pavement breaking drill | |
| US2740211A | Plow and conveyor type earth moving machine | |
| US2385987A | Bucket shock absorber for loading devices | |
| US2379523A | Loading device | |
| US2262283A | Scraper | |
| US2231625A | Scraper | |
| US2195306A | Grading machine | |
| US2163279A | Snow plow | |
| CA401576A | Ground scraper | |
| CA398930A | Earth scraper | |
| CA627096A | Pavement breaking drill | |
| CA669605A | Pavement breaking drill |