Top Inventors at Security Door Controls All Time
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | David Geringer | 10 |
| 2 | Arthur Geringer | 9 |
| 3 | Richard Geringer | 5 |
| #4 | Chen Chung Yu | 1 |
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | David Geringer | 10 |
| 2 | Arthur Geringer | 9 |
| 3 | Richard Geringer | 5 |
| #4 | Chen Chung Yu | 1 |