| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Railway bodies | |
| #3 | Load transportation vehicles | |
| #4 | Street cleaning | |
| #5 | Motor vehicles | |
| #6 | Unspecified technologies | |
| #7 | Construction of roads |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilson Fred D | 6 |
| #2 | Benbow James D | 4 |
| #3 | Green James B | 4 |
| #4 | Burns Leonard S | 4 |
| #5 | Burner William L | 4 |
| #6 | Slaker Joseph H | 3 |
| #7 | Palmer De Mar A | 3 |
| #8 | Rathmell John M | 2 |
| #9 | Edward Kohl Charles | 1 |
| #10 | Brown Edwin C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2286245A | Street sweeping machine | |
| US2269502A | Automotive digging, gathering, carrying, and leveling scraper | |
| US2237299A | Hopper bottom car | |
| US2181629A | Dump car | |
| US2089730A | Road grading machine | |
| US2114412A | Attachment for road rollers | |
| US2029455A | Grade finding mechanism | |
| US2045387A | Elevating grader | |
| US1993003A | Road shouldering machine | |
| US2029489A | Transport truck | |
| US2024483A | Wheeled scraper | |
| US1981170A | Elevating grader | |
| US1983826A | Road machine | |
| US2005727A | Controlling mechanism for vehicle dump doors | |
| US2057735A | Controlling mechanism for vehicle dump doors | |
| US1986387A | Stub axle mounting for wagons | |
| US1983433A | Dump wagon | |
| US2143934A | Dump car | |
| US1977819A | Dump car | |
| US1977621A | Dump car |