| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 4 | |
| #3 | United States | 3 | |
| #4 | Australia | 2 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Computer technology | |
| #3 | Machine tools | |
| #4 | Transport | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Cryptography | |
| #2 | Veneer production | |
| #3 | Data recognition and presentation | |
| #4 | Vehicle tyre repairing | |
| #5 | Dredging | |
| #6 | Coin-freed |
| # | Name | Total Patents |
|---|---|---|
| #1 | James Powers | 5 |
| #2 | Powers James | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US1580570A | Trench digger | |
| US1391402A | Wheel-chain for vehicles | |
| GB154962A | Improvement in code machines | |
| US1436528A | Toothpick cutter and dispenser | |
| DE333413C | Statistical tabulation machine in which the cards punched according to different groups are only used for tabulation and summation within the successive groups | |
| DE325917C | Card punching machine | |
| AU1342114B | Improvements in 12-key perforating machine | |
| AU117811B | Automatic perforating machines |