Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE428470ApublicationCriticalpatent/BE428470A/xx
F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
F42B30/08—Ordnance projectiles or missiles, e.g. shells
F42B30/10—Mortar projectiles
F42B30/12—Mortar projectiles with provision for additional propulsive charges, or for varying the length
