Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1884-1888 Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1867-1876 Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1855-1866 Buskruit I / [Artillerie Inrichtingen] Cursus Munitie Technische Officieren 1954/55 YPR-765 PRI met ERA (explosive reactive armour) Bombardon : orgaan van de Stichting Geschiedkundige Verzameling Explosieven Opruimingsdienst explosief handschrift