| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport | |
| #3 | Environmental technology | |
| #4 | Packaging and shipping | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frost Max | 8 |
| #2 | Schmidt Dr-Ing Fritz R | 1 |
| #3 | Max Frost | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1259373B | Earthing contact for electrical bridging of the axle bearings of rail vehicles | |
| DE668899C | Electrically driven two-wheel tractor with automatically steerable support wheel | |
| US2072672A | Container |