| Patents for James J. Johnston |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 158,809 | Jan. 19, 1875 | Z.C. Phillips | Improvement in boring-machines | drilling and boring |
| 171,999 | Jan. 11, 1876 | W. Crumbie | Improvement in Pipe-Wrench or Tongs | pipe tongs |
| 202,089 | Apr. 09, 1878 | H. Badcock | Pipe Tongs | pipe tongs |
| 332,690 | Dec. 15, 1885 | H. Wright | Portable saw-mill | circular sawmills |
| 332,691 | Dec. 15, 1885 | H. Wright | Circular-saw mill | circular sawmills |
| 446,073 | Feb. 10, 1891 | C.H. Myers | Ratchet Wrench & Drill | wrench combination tools |
| 446,074 | Feb. 10, 1891 | C.H. Myers | Attachment for Metal Planers | metal planer accessories |
| 446,075 | Feb. 10, 1891 | C.H. Myers | Combined Ratchet Wrench & Boring Bit | wrench combination tools |
