| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Pumps | |
| #3 | Bolts for doors or windows | |
| #4 | Blasting | |
| #5 | Veneer production | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hutchison Robert B | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US1882617A | Exploding wedge | |
| US1602264A | Door-locking device | |
| US1067029A | Pumping mechanism for vacuum-cleaners. | |
| US1067030A | Pumping mechanism for vacuum-cleaners. | |
| US1067118A | Pumping mechanism for vacuum-cleaners. | |
| CA128305A | Vacuum cleaner | |
| US946801A | Vacuum-cleaner. | |
| US956100A | Vacuum-cleaner. | |
| US871937A | Surface-cleaning machine. | |
| US813557A | Surface-cleaning machine. | |
| CA339947A | Exploding wedge |