| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | United States | 5 | |
| #3 | France | 3 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Textiles and paper | |
| #3 | Civil engineering | |
| #4 | Machine tools | |
| #5 | Electrical machinery and energy | |
| #6 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Hand carts | |
| #2 | Woven fabrics | |
| #3 | Grinding or polishing devices | |
| #4 | Swimming pools | |
| #5 | Bolts for doors or windows | |
| #6 | Casting metal | |
| #7 | Electric motor controls | |
| #8 | Laces and braids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carl Klein | 5 |
| #2 | Klein Carl | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB323055A | Trucks for handling barrels, boxes and the like | |
| US1772951A | Truck | |
| US1694343A | Truck | |
| US1694342A | Truck | |
| US1408007A | Metallic fencepost | |
| US1351912A | Metallic fencepost |