| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Unspecified technologies | |
| #3 | Servomotors | |
| #4 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Waterson Arthur P | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US3353288A | Land leveler | |
| US3287835A | Land leveler | |
| US3210871A | Land leveler | |
| US3159929A | Land leveler | |
| US3103078A | Land leveler | |
| US3053280A | Pilot operated tracer valve for machine tools | |
| US3034239A | Land leveler | |
| CA646554A | Land leveler | |
| CA713269A | Land leveler | |
| CA675572A | Pilot operated tracer valve for machine tools | |
| CA783873A | Land leveler | |
| CA713268A | Land leveler |