What this class covers:

This class covers raw and semi-finished metal products, including building materials like steel beams, nails, and pipes. It also includes common metal goods like safes, locks, and metal containers. Items must be primarily made of metal to fit in this category. Finished goods, such as furniture or jewelry, fall under other classes.

What this class covers:

This class includes manually-operated tools like wrenches, knives, scissors, and gardening tools. It covers non-electric hand tools used in construction, agriculture, and home improvement. If a tool is powered by a motor, it likely belongs in Class 7 instead. Cutlery such as forks and spoons fall under Class 21.

What this class covers:

This class covers devices that provide light, heat, or air conditioning. It includes lamps, ovens, refrigerators, and water heaters. Products must have a functional purpose related to temperature, illumination, or sanitation. Electric cooking appliances belong here, but mechanical ones may fall into Class 7.