| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Machines | |
| #3 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Handling thin material | |
| #2 | Producing goods from plastic | |
| #3 | Unspecified technologies | |
| #4 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gammeter William F | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2223682A | Stock shell | |
| US1417313A | Film reel | |
| US1392321A | Stock-roll | |
| US1332330A | Tire-machine drum | |
| US1332329A | Stock-shell for winding fabrics | |
| US1222943A | Metal cap for rolls. | |
| US1168188A | Composite roll for textiles. | |
| CA156139A | Stock shell for winding fabrics | |
| US1104296A | Stock-shell for winding fabrics. | |
| CA129399A | Metallic stock shell for fabrics | |
| US1003593A | Metallic stock-shell for fabrics. | |
| CA280449A | Shock absorber |