Showing 1–1 of 1 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Elmer Christian Pennewaard | Poco Graphite | 1 |
1 patents · 1 inventors
Ranked #23,017 of 34,820 cities Top 70%
Showing 1–1 of 1 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Elmer Christian Pennewaard | Poco Graphite | 1 |