| Hammond typewriter(noun, technology, entity, form, concept) |
| Hansen writing ball(noun, technology, entity, form, concept) |
| Hell-schreiber(noun, technology, entity, form, concept) |
| Henry Mill's typewriter(noun, technology, entity, form, concept) |
| Hicks-neutral technical change(technology, entity, form, concept) |
| Hood's cross-staff(noun, technology, entity, form, concept) |
| Hornsby water clock(noun, technology, entity, form, concept) |
| Imperial Typewriter Company typerwriter(noun, technology, entity, form, concept) |
| Jacob's staff(noun, technology, entity, form, concept) |
| Japanese typewriter(noun, technology, entity, form, concept) |
| Jayrun water clock(noun, technology, entity, form, concept) |
| Kirkdale sundial(noun, technology, entity, form, concept) |
| Kronos effect(technology, entity, form, concept) |
| Kyota Sugimoto's typewriter(noun, technology, entity, form, concept) |
| Leibniz wheel(noun, technology, entity, form, concept) |
| Leyden jar(noun, technology, entity, form, concept) |
| Linux adoption(technology, entity, form, concept) |
| London dial(noun, technology, entity, form, concept) |
| Lucien Stephen Crandall's typewriter(noun, technology, entity, form, concept) |
| Magdeburg hemisphere(noun, technology, entity, form, concept) |