| high-definition digital versatile disc(noun, technology, entity, form, concept) |
| high-definition digital video disc(noun, technology, entity, form, concept) |
| hipac(noun, technology, entity, form, concept) |
| historical scientific instrument(noun, technology, entity, form, concept) |
| honcheonsigye(noun, technology, entity, form, concept) |
| hydrochronometer(noun, technology, entity, form, concept) |
| index typewriter(noun, technology, entity, form, concept) |
| industrial steam locomotive(noun, technology, entity, form, concept) |
| inflow clepsydra(noun, technology, entity, form, concept) |
| inflow water clock(noun, technology, entity, form, concept) |
| international business machines corporation typewriter(noun, technology, entity, form, concept) |
| international business machines corporation unit record equipment(noun, technology, entity, form, concept) |
| interpreter(noun, technology, entity, form, concept) |
| iron horse(noun, technology, entity, form, concept) |
| jeton(noun, technology, entity, form, concept) |
| keyboard layout(noun, technology, entity, form, concept) |
| keypunch(noun, technology, entity, form, concept) |
| large electrostatic generator(noun, technology, entity, form, concept) |
| laserdisc(noun, technology, entity, form, concept) |
| locomotive duplex(noun, technology, entity, form, concept) |