| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | United Kingdom | 3 | |
| #3 | France | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Measurement | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Testing of structures | |
| #3 | Making metal sheets | |
| #4 | Vehicle tyre repairing | |
| #5 | Vehicle signalling and lighting | |
| #6 | Forging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lebert Alfred | 4 |
| #2 | Alfred Lebert | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2026688A | Balancing machine | |
| GB396296A | Improvements in machines for testing the balance of rotary bodies | |
| GB372220A | Grinding or flutter disc | |
| US1894181A | Tool and apparatus for leveling cylindrical surfaces from grinding disks | |
| GB371754A | Device for dressing circular abrasive discs |