demonstrationYear
P35430
predicate
Indicates the year in which a demonstration, display, or public showing of something took place.
Sample triples (1)
| Subject | Object |
|---|---|
| Photophone | 1880 → |
P35430
predicate
Indicates the year in which a demonstration, display, or public showing of something took place.
| Subject | Object |
|---|---|
| Photophone | 1880 → |