# Martin Sigvart Grytbak

> American engineer

**Wikidata**: [Q6776587](https://www.wikidata.org/wiki/Q6776587)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Martin_Sigvart_Grytbak)  
**Source**: https://4ort.xyz/entity/martin-sigvart-grytbak


## References

1. [Digital Archives](https://www.digitalarkivet.no/view/255/pd00000011699483)
2. Star Tribune. 1953
3. [Minnesota Historical Society](https://www.mnhs.org/people/deathrecords/1953-MN-027806)