| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 4 | |
| #3 | Germany | 2 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Republic of Korea | 1 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Containers for goods storage | |
| #3 | Transport or storage devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pole Charles D | 6 |
| #2 | D Leitch John | 2 |
| #3 | Leitch John D | 2 |
| #4 | Leitch John Daniel | 2 |
| #5 | Leitch Jack D | 1 |
| #6 | Williams Nolan H | 1 |
| #7 | Vaughan Warren R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4574989A | Swing gates | |
| CA1204711A | Swing gates | |
| US4326476A | Navigation in ice covered waterways | |
| US3604573A | System and apparatus for unloading bulk material from a storage enclosure | |
| US3604574A | Apparatus for unloading bulk material from a storage enclosure | |
| CA867178A | Apparatus for unloading bulk material from a storage enclosure | |
| CA897089A | System and apparatus for unloading bulk material from a storage enclosure | |
| US3384248A | Unloading system and method |