| Patents for Armstrong Bros. Tool Co. |
Patents 16 -
30
of 36
      |
| Number | Date | Patentee | Title | Type |
| 1,214,498 | Feb. 06, 1917 | J. Armstrong | Tool Holder | lathe tool holders and tool posts |
| 1,252,031 | Jan. 01, 1918 | W.S. Robinson | Planer Tool Holder | metal planer tool holders |
| 1,277,481 | Sep. 03, 1918 | W.S. Robinson | Tool Holder | lathe tool holders and tool posts |
| 1,343,257 | Jun. 15, 1920 | J.C. Fletcher | Tool Holder | lathe tool holders and tool posts |
| 1,495,751 | May 27, 1924 | J.V. Larson | Adjustable Wrench | pipe wrenches |
| 1,613,577 | Jan. 04, 1927 | J.C. Fletcher | Die Cutting Machine | |
| 1,621,226 | Mar. 15, 1927 | S.J. Welter | Milling cutter | milling machine cutters |
| 1,653,326 | Dec. 20, 1927 | S.J. Welter | Chain Pipe Vise | pipe and chain vises |
| 1,676,210 | Jul. 03, 1928 | P. Armstrong | Pipe Wrench | pipe wrenches |
| 1,732,549 | Oct. 22, 1929 | L.F. Armstrong | Wrench For Tool Holders | auxiliary wrenches |
| 2,008,367 | Jul. 16, 1935 | H.A. Rhinevault | Detent | socket wrenches |
| 2,078,475 | Apr. 27, 1937 | S.J. Welter | Tool Holder | lathe tools |
| 2,162,359 | Jun. 13, 1939 | H.A. Rhinevault | Lock for Socket Wrenches, etc. | socket wrenches |
| 2,190,585 | Feb. 13, 1940 | H.A. Rhinevault | C Clamp | clamps |
| 2,193,984 | Mar. 19, 1940 | H.A. Rhinevault | Reversible Ratchet Wrench | ratchet wrenches |
