# Rudolf F. Haffenreffer

> American businessman and philanthropist

**Wikidata**: [Q7377179](https://www.wikidata.org/wiki/Q7377179)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Rudolf_F._Haffenreffer)  
**Source**: https://4ort.xyz/entity/rudolf-f-haffenreffer