Invention Classification

• Class A: Mechanics – engines – machinery – tools – industrial processes – metallurgy
• Class B: Clocks and watches – jewelry – machinery – tools
• Class C: Computer sciences – software – electronics – electricity – methods of communication
• Class D: Building - Architecture - Civil Engineering – construction – materials  - woodwork
• Class E: Sanitation – Ventilation – Heating
• Class F: Security – rescue – Alarm
• Class G: Ironware – D.I.Y.
• Class H: Furnishing – Interior architecture
• Class I: Domestic Science – Restaurant Equipment
• Class J: Commercial, Industrial and office equipment
• Class K: Agriculture – horticulture – Gardening
• Class L: Clothing – textiles – machines and accessories
• Class M: Medicine – Surgery – orthopedics – Material for the handicapped 
• Class N: Optics – Photography – Cinematography
• Class O: Teaching methods and materials – musical Instruments Art materials
• Class P: Transport – motor vehicles – Ships – aviation accessories
• Class Q: Foodstuff – drinks – cosmetics – paramedical – health hygiene
• Class R: Sport – leisure
• Class S: Practical Novelties
• Class T: Publicity – printing – packaging
• Class U: Games – toys
• Class V: Protection of the Environment – Energy