| Intro | Chemical engineer and inventor |
| A.K.A. | Johnstone, Robert Edgeworth |
| Was |
Engineer Chemical engineer |
| From | United Kingdom |
| Type | Engineering |
| Gender | male |
| Birth | 4 February 1900, Dublin |
| Death |
3 December 1994, Parcé-sur-Sarthe (aged 94 years) |
| Intro | Chemical engineer and inventor |
| A.K.A. | Johnstone, Robert Edgeworth |
| Was |
Engineer Chemical engineer |
| From | United Kingdom |
| Type | Engineering |
| Gender | male |
| Birth | 4 February 1900, Dublin |
| Death |
3 December 1994, Parcé-sur-Sarthe (aged 94 years) |