| Patents for Armstrong Manufacturing Co. |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 269,141 | Dec. 12, 1882 | N.W. Vandegrift | Pipe Vise | pipe and chain vises |
| 274,544 | Mar. 27, 1883 | F. Armstrong | Wrench | pipe wrenches |
| 298,043 | May 06, 1884 | N.W. Vandegrift | Wrench | pipe wrenches |
| 330,175 | Nov. 10, 1885 | N.W. Vandegrift, F. Armstrong | Pipe-cutter | plumber |
| 335,986 | Feb. 09, 1886 | N.W. Vandegrift, F. Armstrong | Wrench | quick adjust wrenches |
| 337,627 | Mar. 09, 1886 | F.H. Seymour | Pipe Wrench Attachment For Monkey Wrenches | chain and strap wrenches |
| 383,165 | May 22, 1888 | N.W. Vandegrift, F. Armstrong | Bench Vise | bench vises |
| 392,300 | Nov. 06, 1888 | F. Armstrong, N.W. Vandegrift | Wrench | pipe wrenches |
| 396,857 | Jan. 29, 1889 | L.F. Carstensen | Wrench | screw adjust wrenches |
| 434,424 | Aug. 19, 1890 | A.W. Cash | Pipe Threading and Cutting Off Machine | pipe threading machines |
| 452,768 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber |
| 452,769 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber |
| 452,770 | May 26, 1891 | A.W. Cash | Nipple-chuck | plumber |
| 454,029 | Jun. 16, 1891 | A.W. Cash | Machine for Cutting Dies Taps &c. | metal threading machines |
| 1,119,765 | Dec. 01, 1914 | F.C. Sanford | Die Stock | tap wrenches and die stocks |
