| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Diagnosis and surgery | |
| #3 | Unspecified technologies | |
| #4 | Coin-freed | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lindgren Alexus C | 4 |
| #2 | Cameron William W | 3 |
| #3 | Graham William S | 2 |
| #4 | Brown Earl J | 1 |
| #5 | Gallagher Arthur D | 1 |
| #6 | Baird Edward P | 1 |
| #7 | Lindergren Alexus C | 1 |
| #8 | Johnston Roy B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1832010A | Two way tractor plow | |
| US1632128A | Depth adjuster for plows | |
| US1561611A | Clutch | |
| US1755819A | Two-way tractor plow | |
| US1415311A | Plow | |
| US1440924A | Power lift plow | |
| US1387500A | Power-lift disk plow | |
| US1394914A | Power-lift plow | |
| US1412918A | Plow | |
| US1377057A | Tractor-plow | |
| US1149990A | Coin-controlled lock. | |
| US987951A | Optical instrument. | |
| CA208435A | Power lift disc plough |