Info
| Last name | Demmenie |
| First name | Joop |
| Nationality |  Netherlands |
| Date of birth | 19-12-1918 |
| Place of birth | Rotterdam |
| Passed away | 03-06-1991 |
| Age when passed away | 72 |
| Place of passing | Rotterdam |
Results
| Date | Rank | Race |
|---|---|---|
| 16-08 | 4 | National Road Championships - Netherlands (CN) |