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Protection : 1031 phrases in 73 subjects |
| Agriculture | 1 |
| Animal husbandry | 1 |
| Antennas and waveguides | 1 |
| Art | 2 |
| Automated equipment | 1 |
| Banking | 1 |
| Cables and cable production | 1 |
| Chemistry | 18 |
| Communications | 10 |
| Construction | 195 |
| Criminal law | 5 |
| Cultural studies | 5 |
| Data processing | 1 |
| Ecology | 1 |
| Economics | 25 |
| Education | 3 |
| Electric machinery | 30 |
| Electric motors | 1 |
| Electric traction | 2 |
| Electrical engineering | 6 |
| Electricity generation | 8 |
| Electrochemistry | 1 |
| Electronics | 94 |
| Environment | 108 |
| European Union | 4 |
| Finances | 26 |
| Fish farming pisciculture | 2 |
| Forestry | 27 |
| General | 91 |
| Health care | 25 |
| Hobbies and pastimes | 1 |
| Human rights activism | 34 |
| Immigration and citizenship | 30 |
| Information technology | 17 |
| International law | 1 |
| Isolation | 6 |
| Law | 29 |
| Life sciences | 4 |
| Lighting other than cinema | 3 |
| Mathematics | 3 |
| Medical | 3 |
| Melioration | 1 |
| Microsoft | 38 |
| Municipal planning | 1 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Nuclear physics | 9 |
| Obsolete / dated | 19 |
| Patents | 11 |
| Politics | 26 |
| Power lines | 3 |
| Procedural law | 7 |
| Radio | 8 |
| Radiology | 3 |
| Rail transport | 7 |
| Religion | 2 |
| Research and development | 2 |
| Risk Management | 2 |
| Social science | 8 |
| Sociology | 6 |
| Statistics | 1 |
| Superconductivity | 2 |
| Technology | 1 |
| Telegraphy | 3 |
| Thermal Energy | 1 |
| Trade unions | 9 |
| Transformers | 3 |
| Transport | 16 |
| United Nations | 6 |
| Vacuum tubes | 1 |
| Ventilation | 3 |
| Welding | 2 |
| Wind Energy | 1 |