| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 29 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Civil engineering | |
| #3 | Electrical machinery and energy | |
| #4 | Machine tools | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Dredging | |
| #3 | Installation of electric cables | |
| #4 | Unspecified technologies | |
| #5 | Blasting | |
| #6 | Construction of roads |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mitchell Rollie H | 13 |
| #2 | Sjogren Oscar W | 9 |
| #3 | Thomas Thomas M | 7 |
| #4 | Wadelton Edwin F | 3 |
| #5 | Gerold George E | 3 |
| #6 | Babel Elmer H | 2 |
| #7 | Brodersen Max M | 2 |
| #8 | Rogers Clifford R | 2 |
| #9 | Robert Killefer | 1 |
| #10 | Christenson George A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2433816A | Offset disk harrow | |
| US2385637A | Disk harrow | |
| US2389993A | Disk gang assembly | |
| US2351830A | Ground working implement | |
| US2334455A | Disk harrow | |
| US2340497A | Agricultural implement | |
| US2272100A | Disk gang assembly | |
| US2259536A | Revolving scraper | |
| US2269519A | Land leveler | |
| US2307436A | Spring tooth harrow | |
| US2280014A | Cable laying implement | |
| US2254324A | Cable layer | |
| US2221461A | Offset disk harrow | |
| US2256220A | Disk gang assembly | |
| US2237009A | Disk harrow | |
| US2201240A | Offset disk harrow | |
| US2163917A | Offset disk harrow | |
| US2135192A | Disk mounting | |
| US2167768A | Disk harrow | |
| US2171768A | Disk bedder |