CPC Subgroup
F42B 39/20 Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable
Full Title
Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags > Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable