| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements | |
| #3 | Packaging and shipping | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Clutches and brakes | |
| #3 | Elevators and escalators | |
| #4 | Servomotors | |
| #5 | Starting of combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fraser Ethelbert M | 13 |
| #2 | Georgeson William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1954809A | Electromagnetic brake | |
| US1813394A | Inductor winding and method of making same | |
| US1813393A | Electric machine | |
| US1289148A | Starting and lighting apparatus. | |
| CA152554A | Electric elevator system | |
| US1094711A | Electric motor. | |
| US1052717A | Rotary transformer. | |
| US955508A | Electrohydraulic elevator system. | |
| CA64234A | Elevator gearing | |
| CA64235A | Elevator | |
| US631710A | Elevator. | |
| CA47181A | Elevator | |
| CA317974A | Electric machine |