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| All Patents in class 42/78 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,304 | Aug. 29, 1839 | S. Colt | Improvement in fire-arms and in the apparatus used therewith | revolvers | |
| 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 | |
| 2,319,451 | May 18, 1943 | W.F. Groene, W.R. Meyer | Gun rifling machine | gunsmith | |