 |
|
filament : 80 phrases in 14 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Earth sciences | 3 |
| Electronics | 24 |
| General | 3 |
| Health care | 2 |
| Industry | 18 |
| Lighting other than cinema | 8 |
| Natural sciences | 3 |
| Patents | 3 |
| Technology | 11 |
| Textile industry | 1 |
| Transport | 1 |
| Vacuum tubes | 1 |