| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Dredging | |
| #3 | Construction of roads |
| # | Name | Total Patents |
|---|---|---|
| #1 | Watters Daniel M | 5 |
| #2 | Olinger Alvin P | 1 |
| #3 | Vaughn Jesse A | 1 |
| #4 | Hudson Arthur W | 1 |
| #5 | Sjogren Oscar W | 1 |
| #6 | Thayer Harry W | 1 |
| #7 | Robert Killefer | 1 |
| #8 | Lytle Harry R | 1 |
| #9 | Enzenauer Edward M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1955257A | Revolving drag scraper | |
| US1885528A | Scraper | |
| US1862903A | Control for scrapers | |
| US1849183A | Automatic scraper | |
| US1620247A | Road tool | |
| US1710222A | Power lift | |
| US1619208A | Disk cultivator | |
| US1487413A | Power lift for groundworking implements | |
| US1603821A | Body-leveling device | |
| US1505679A | Power lift for groundworking implements | |
| US1421113A | Disk cultivator | |
| US1487412A | Cultivator |