| Cavallo's multiplier(noun, technology, entity, form, concept) |
| Chinese typewriter(noun, technology, entity, form, concept) |
| Coggeshall slide rule(noun, technology, entity, form, concept) |
| Cole's quadrant(noun, technology, entity, form, concept) |
| Corbett's electrostatic machine(noun, technology, entity, form, concept) |
| Crookes tube(noun, technology, entity, form, concept) |
| Davis quadrant(noun, technology, entity, form, concept) |
| Eise Eisinga planetarium(noun, technology, entity, form, concept) |
| Eliphalet Remington and Sons typewriter(noun, technology, entity, form, concept) |
| Elton's quadrant(noun, technology, entity, form, concept) |
| Ford typewriter(noun, technology, entity, form, concept) |
| Franklin's electrostatic machine(noun, technology, entity, form, concept) |
| Franklin bell(noun, technology, entity, form, concept) |
| Friden flexowriter(noun, technology, entity, form, concept) |
| Genaille-Lucas ruler(noun, technology, entity, form, concept) |
| Groma Buromaschinen typewriter(noun, technology, entity, form, concept) |
| Halda typewriter(noun, technology, entity, form, concept) |
| Hammond one-b typewriter(noun, technology, entity, form, concept) |
| Hammond typewriter(noun, technology, entity, form, concept) |
| Hansen writing ball(noun, technology, entity, form, concept) |