| Patents for James Armstrong |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 4,963 | Feb. 09, 1847 | H. Herring, J. Armstrong | Water Wheel | water wheels |
| 79,540 | Jul. 07, 1868 | J. Armstrong | Rotary Harrow | harrows |
| 525,613 | Sep. 04, 1894 | W. Nier | Stave-cutting machine | barrel making machines |
| 535,440 | Mar. 12, 1895 | J. Armstrong | Tool Holder | lathe tool holders and tool posts |
| 636,741 | Nov. 14, 1899 | J. Armstrong | Tool-holder | lathe tool holders and tool posts |
| 675,184 | May 28, 1901 | J. Armstrong | Tool Holder | metal planer tool holders |
| 960,769 | Jun. 07, 1910 | J. Armstrong | Nurling Tool | |
| 1,214,497 | Feb. 06, 1917 | J. Armstrong | Tool Holder | lathe tool holders and tool posts |
| 1,214,498 | Feb. 06, 1917 | J. Armstrong | Tool Holder | lathe tool holders and tool posts |
