| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Germany | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Cranes | |
| #2 | Transport or storage devices | |
| #3 | Elevators and escalators | |
| #4 | Milling | |
| #5 | Unspecified technologies | |
| #6 | Winches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Warren Travell | 7 |
| #2 | Travell Warren | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1497813A | Material-handling apparatus | |
| US1589727A | Suspension device | |
| GB137821A | Improvements in or relating to hoisting and transporting apparatus | |
| US1476557A | Cargo-handling apparatus | |
| US1397259A | Rope-grip | |
| US1333947A | Transfer mechanism | |
| US1333948A | Transfer mechanism | |
| US1333946A | Grinding-machine |