| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Canada | 2 | |
| #3 | United States | 2 | |
| #4 | Australia | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 | |
| #8 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Hand carts | |
| #2 | Vehicle connections | |
| #3 | Containers for goods storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Su Chung-Shiu | 7 |
| #2 | Su Chung-Hsiu | 4 |
| #3 | Su Chung Shiu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US10040466B1 | Hand trolley | |
| CA2629490A1 | Hand cart | |
| AU2008201606A1 | Hand Cart | |
| GB0803963D0 | Hand cart | |
| FR2885864A1 | Devil structure. | |
| CH695419A5 | Trolley, has resting units provided at drive gear wheel, which intervenes in cavities, and swiveling blocks of stand plates with active gear wheel, which combs drive gear wheel to rotate drive gear wheel | |
| DE102005020057B3 | Trolley structure, has checking units provided to peripheral edge of fan-shaped unit to insert into troughs, and active gear made and integrated to outer side of pivoting holder when active gear meshes with driven gear | |
| GB0508146D0 | Trolley structure | |
| CA2503939A1 | Trolley structure | |
| US7097183B1 | Trolley structure | |
| GB0226561D0 | Compact cart assembly |