Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1855-1866 Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1893-1896 Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1877-1883
