Library of Congress : classification : class U. : military science Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1897-1900 Patents for Inventions : Abridgments of specifications. : class 9, ammunition. torpedoes, explosives, and pyrotechnics. : Period-A.D. 1889-1892 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 Patents for inventions : Abridgments of specifications. Class 119, Small-arms. Period A.D. 1855-1930
