| All Patents in class 409/306 |
Patents 1 -
15
of 18
      |
| Number | Date | Patentee | Title | Type |
| 7,178 | Mar. 12, 1850 | J. Culbertson, E. Williams | Machine for Giving Increased Twist in Cutting Rifles | rifling machines |
| 12,285 | Jan. 23, 1855 | E.K. Root | Rifling Machine | rifling machines |
| 33,884 | Dec. 10, 1861 | W.H. Gwynne | Improvement in Machinery for Rifling Guns | rifling machines |
| 34,661 | Mar. 11, 1862 | P. Foy | Improvement in Apparatus for Boring and Rifling Cannon | rifling machines |
| 37,054 | Dec. 02, 1862 | T. Powers | Rifling Machine | rifling machines |
| 37,057 | Dec. 02, 1862 | C. Sharps | Rifling Machine | rifling machines |
| 37,898 | Mar. 17, 1863 | A. Bonzano | Improvement in Machinery for Rifling Cannons | rifling machines |
| 38,000 | Mar. 24, 1863 | G.W. Bigelow | Rifling Machine | rifling machines |
| 46,714 | Mar. 07, 1865 | C. Sellers, W. Sellers | Machine for Rifling Gun Barrels | rifling machines |
| 157,034 | Nov. 17, 1874 | W.D. Squires | Machines for Enlarging the Bore of Gun-Barrels | horizontal boring mills |
| 259,031 | Jun. 06, 1882 | P. Mauser | Machine for Rifling Gun and Pistol Barrels | rifling machines |
| 315,130 | Apr. 07, 1885 | J.W. Day, W.H. Davenport | Cutter Head for Rifling Machines | rifling machines |
| 318,824 | May 26, 1885 | J.R. Streett | Rifling Machine for Heavy Guns | rifling machines |
| 499,683 | Jun. 13, 1893 | M.F. Smith | Adjusting Device for Rifling Guns or Cannon | rifling machines |
| 872,036 | Nov. 26, 1907 | W. Wattie | Machine for Cutting Spiral Oil Channels in Boxes, Bearings, &c. | metalworking machines |
