| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Cranes | |
| #2 | Ships | |
| #3 | Transport or storage devices | |
| #4 | Winches | |
| #5 | Elevators and escalators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Speer James W | 2 |
| #2 | Clark James W | 2 |
| #3 | Hoyle Albert C | 2 |
| #4 | Bevard Roger Lahroy | 1 |
| #5 | Alexander Finlay | 1 |
| #6 | Horton Conrad | 1 |
| #7 | Bevard Roger L | 1 |
| #8 | Harry Knutson | 1 |
| #9 | Hoyle Albert Carbis | 1 |
| #10 | Finlay Alexander | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB708791A | Crane | |
| US2649983A | Skip | |
| GB662590A | Ship mounted crane | |
| US2652230A | Winch | |
| US2620075A | Crane | |
| US2551066A | Ship mounted crane | |
| US2541893A | Ship cargo-handling device | |
| US2515988A | Conveyer | |
| CA514702A | Skip |