# Ralph M. Evans

> patent holder

**Wikidata**: [Q73425794](https://www.wikidata.org/wiki/Q73425794)  
**Source**: https://4ort.xyz/entity/ralph-m-evans


## References

1. Find a Grave
2. Czech National Authority Database
3. [Source](https://link.springer.com/chapter/10.1007/978-3-319-30811-1_78)
4. [Source](https://fotoconmac.com/evans-ralph/)
5. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
6. Virtual International Authority File