John Jacob Holtzapffel 1836 - 1897
- occupation:
- Mechanical engineer, Tool maker
- Nationality:
- British
son of Charles Holtzapffel; 1856 - 'Turning and Mechanical Manipulation' Volumes 4 published?
son of Charles Holtzapffel; 1856 - 'Turning and Mechanical Manipulation' Volumes 4 published?