DIFF Subgroup
A42B 3/061 Full Title
Helmets; Helmet covers ( defence protection helmets F41H1/04) > Parts, details or accessories of helmets > Impact-absorbing shells, e.g. of crash helmets
A42B 3/061 Helmets; Helmet covers ( defence protection helmets F41H1/04) > Parts, details or accessories of helmets > Impact-absorbing shells, e.g. of crash helmets