| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 6 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Accessories for machine tools | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Smith Robert A | 9 |
| #2 | Serrell John J | 4 |
| #3 | Serell John | 1 |
| #4 | Smith Robert Armstrong | 1 |
| #5 | Smith John A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1635150A | Spring-cross yieldable coupling | |
| US1482095A | Flexible coupling | |
| US1368663A | Process of making flexible coupling members, &c. | |
| US1491761A | Spiral-spring-coupling device | |
| US1403272A | Flexible power coupling | |
| US1368662A | Flexible coupling | |
| CA232456A | Spiral spring coupling | |
| CA430571A | Bearing | |
| CA232454A | Flexible coupling | |
| CA238754A | Driving key | |
| CA232455A | Flexible coupling | |
| CA235307A | Flexible coupling | |
| CA278198A | Bushed flexible coupling |