| |
|
torquetum
|
131176 |
| |
|
Scanimate
|
131184 |
| |
|
Artillery operation
|
131189 |
| |
|
Rangekeeper
|
131192 |
| |
|
Defunct computer companies of the United States
|
131199 |
| |
|
E6B
|
131247 |
| |
|
Frederick Libby
|
94965 |
| |
|
Spanish inventors
|
131207 |
| |
|
Airships of France
|
131212 |
| |
|
Tourist attractions in Niagara Falls, Ontario
|
131216 |