| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | United States | 5 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Packaging and shipping | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Nails | |
| #3 | Unspecified technologies | |
| #4 | Metal-working | |
| #5 | Transport or storage devices | |
| #6 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Double Plummer E | 11 |
| #2 | Frank Wascher | 3 |
| #3 | Wascher Frank | 1 |
| #4 | Langmaid Charles T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2300619A | Lock nut and method of making | |
| US2191983A | Clutch mechanism | |
| US2205087A | Hopper mechanism | |
| US2187647A | Clinch-nut machine | |
| US2110039A | Clinch-nut | |
| CA401913A | Clinch-nut machine | |
| CA389533A | Clinch nut fastening method | |
| CA405706A | Hopper mechanism | |
| CA412185A | Lock nut | |
| CA385805A | Clinch nut | |
| CA397899A | Clinch-nut forming device |