International Patent Classification (Comprising Nine Volumes)

Author: World Intellectual Property Organization
Publisher:
Publish Date: 2006-01-01
Features: A: Human life needs · B: Work, transportation · C: Chemistry, metallurgy · D: Textiles, papermaking · E: Fixed buildings · F: Mechanical engineering, lighting, heating, weapons, explosives · G: Physics · H: Electricity · User Guide (including index of major categories, subcategories, and major groups)