| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Materials and metallurgy | |
| #5 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Presses | |
| #2 | Pistons and sealings | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Working metallic powder | |
| #6 | Nails | |
| #7 | Servomotors | |
| #8 | Venting or aerating devices | |
| #9 | Cables and insulators | |
| #10 | Special electric heating or lighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bowles A G | 6 |
| #2 | Witkin D E | 4 |
| #3 | Papen E L J | 3 |
| #4 | Witkin Ded E | 1 |
| #5 | Dalrymple D D | 1 |