Class 13 includes firearms, ammunition, projectiles, explosives and pyrotechnic products. Parts of these goods, and certain accessories therefor, are also in this class.
The goods in this class are powered by an incendiary, explosive or propellant force. Goods are not classified in Class 13 just because they are weapons. Bladed weapons such as knives are in Cl. 8, or in Cl. 28 if they are used for sports like fencing weapons. With some exceptions, for example, sprays for personal defence purposes, the weapons in Class 13 are mostly explosive devices.
Sometimes, the term "weapon" is used in Class 13 to distinguish items in this class from similar items that have a different function and that are therefore classified elsewhere, such as "air pistols [weapons]" in Class 13 and "toy air pistols" in Cl. 28.
The example mentioned in the previous paragraph is fairly obvious. However, the difference might be less obvious in the case of harpoon guns. "Harpoon guns [weapons]" is in Class 13 while "harpoon guns [sports articles]" is in Cl. 28. The difference between these goods has been considered significant enough to warrant their classification in different classes. Other than a few specific examples, however, explosives and firearms are all in Class 13, regardless of whether they are for military or sporting use.
Whilst signalling apparatus in general belongs to Cl. 9, there are some types of signals that belong to Class 13, for example, explosive fog signals are in Class 13 while non-explosive fog signals are in Cl. 9.