| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Machines | |
| #5 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Servomotors | |
| #3 | Ships | |
| #4 | Horticulture | |
| #5 | Unspecified technologies | |
| #6 | Vehicle suspension arrangements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allin George S | 16 |
| #2 | Patrick Flynn Theodore | 3 |
| #3 | Bistrom Frank V | 1 |
| #4 | Brown Ivan H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2239139A | Uniflow valve | |
| US2238094A | Stump splitter | |
| US2170889A | Anchor | |
| US2145384A | Hydraulic system | |
| US2167166A | Bulldozer | |
| US2134019A | Bulldozer | |
| US2214240A | Scraper carrier | |
| US2124047A | Tandem wheel truck | |
| US2081192A | Rock blade for bulldozers | |
| US2108466A | Bulldozer | |
| CA421191A | Load carrying scraper | |
| CA434254A | Valve | |
| CA441130A | Scraper | |
| CA421720A | Hydraulic power system for tractor | |
| CA391729A | Scraper carrier | |
| CA388155A | Bulldozer |