| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 3 | |
| #3 | Australia | 2 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Harvesting | |
| #3 | Motor vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crumrine John C | 9 |
| #2 | Burda Robert E | 6 |
| #3 | Richardson Raymond W | 6 |
| #4 | Richardson R | 1 |
| #5 | Brown Theophilus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA1108459A | Folding flexible undercutter plow | |
| US4204575A | Method of folding a plurality of wing sections of an articulated implement | |
| US4206816A | Folding flexible undercutter plow | |
| US4133391A | Folding flexible undercutter plow | |
| US4150725A | Implement with compensation for terrain irregularities | |
| US3788051A | Device for attaching tine extensions to cutter bar | |
| US821779A | Manure-spreader. |