| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 9 | |
| #2 | United States | 8 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Fluid heaters | |
| #2 | Nailing machines | |
| #3 | Unspecified technologies | |
| #4 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Evans William L | 17 |
| Publication | Filing date | Title |
|---|---|---|
| US2599818A | Apparatus for driving wedges in armature slots | |
| US1906144A | Electric fluid heater | |
| US1906145A | Electric fluid heater | |
| US1920685A | Electric water heater | |
| US1995673A | Electric heater | |
| US1770882A | Ring-joint machine | |
| US1617621A | Device for making ring joints | |
| US1617622A | Device for making ring joints | |
| CA153963A | Joint | |
| CA131069A | Door | |
| CA76044A | Door hinge | |
| CA315151A | Ring joint machine | |
| CA229301A | Hinge | |
| CA269523A | Ring joint manufacture | |
| CA269524A | Ring joint manufacture | |
| CA315152A | Ring joint machine | |
| CA281374A | Ring joint |