# Willem Zantvoort
**Wikidata**: [Q135301218](https://www.wikidata.org/wiki/Q135301218)  
**Source**: https://4ort.xyz/entity/willem-zantvoort


## References

1. [Source](https://www.genealogieonline.nl/familie-zantvoort/I757.php)
2. [1935](https://n2t.net/ark:/33862/collect/715382)
3. [Source](https://www.rvo.nl/files/file/octrooiportal/2013/11/1977_nr3_%252830-39%2529.pdf)
4. [1994](https://resolver.kb.nl/resolve?urn=KBNRC01:000030845:mpeg21:p006)