heldPatentOn
P183836
predicate
Indicates that one entity legally possessed the rights to a specific patent covering an invention, process, or design.
All labels observed (1)
| Label | Occurrences |
|---|---|
| heldPatentOn canonical | 2 |
Sample triples (2)
| Subject | Object |
|---|---|
| Harold F. Pitcairn | autogyro rotor head improvements ⓘ |
| Harold F. Pitcairn | autogyro control systems ⓘ |