| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Workshop equipment | |
| #3 | Tools for connecting or disengaging | |
| #4 | Turning | |
| #5 | Books | |
| #6 | Clutches and brakes | |
| #7 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Coulter Charles J | 12 |
| #2 | Adamson Nils F | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1291421A | Adjustable wrench-head. | |
| US1115402A | Portable rail-drill. | |
| US1016477A | Combined rail drill and clamp. | |
| US990115A | Combination rail-clamp and machine-tool. | |
| CA112365A | Wrench and clamp | |
| US929563A | Combination machine-drill. | |
| US898328A | Mechanical movement. | |
| US871482A | Combined machine-wrench and clamp. | |
| US784549A | Leaf-turner. | |
| US765816A | Ratchet-wrench. | |
| GB190314729A | Improvements in Wrenches. | |
| US712655A | Wrench. |