| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Elevators and escalators | |
| #2 | Magnets and transformers | |
| #3 | Electric motor controls |
| # | Name | Total Patents |
|---|---|---|
| #1 | James Dunlop | 4 |
| #2 | Clancy John F | 4 |
| #3 | Gazda Adolph A | 4 |
| #4 | Richard Brenne | 1 |
| #5 | Jacobson Carl A | 1 |
| #6 | Hecht Jr Frank A | 1 |
| #7 | James Dumlop | 1 |
| #8 | Brenne Richard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1627320A | Floor selector for elevators | |
| US1619405A | Elevator | |
| US1598678A | Elevator-door lock | |
| US1598064A | Elevator-door lock | |
| US1598065A | Safety device for elevators | |
| US1686000A | Control board for elevators | |
| US1477630A | Elevator-door lock | |
| US1463947A | Control system | |
| US1425003A | Switch | |
| US1460404A | Guide shoe for elevators | |
| US1505699A | Elevator control | |
| US1497780A | Motor control | |
| US1479027A | Elevator lock | |
| US1209637A | Door-lock and door-switch for electric elevators. | |
| US1100134A | Controller. |