| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy | |
| #3 | Control |
| # | Technology | |
|---|---|---|
| #1 | Elevators and escalators | |
| #2 | Winches | |
| #3 | Electric motor controls | |
| #4 | Control or regulating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Borden Joseph H | 6 |
| #2 | Atkinson Willard S | 5 |
| #3 | Brown Richard P | 1 |
| #4 | Guilbert Jr Nicholas R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2351316A | Motor control system | |
| US2230073A | Elevator signaling system | |
| US1986620A | Elevator | |
| US1972372A | Elevator system | |
| US1939656A | Method of and apparatus for landing cars | |
| US1945392A | Elevator control system | |
| US1577999A | Elevator braking system | |
| US1563544A | Brake mechanism and magnet system therefor | |
| US1514822A | Elevator cable | |
| US1446631A | Elevator control mechanism | |
| US1473692A | Elevator buffer | |
| CA345482A | Elevator car landing apparatus |