| Patents for Henry K. Porter |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
 | 72,327 | Dec. 17, 1867 | H.K. Porter, T.W. Porter | Improvement in vises |
 | 103,925 | Jun. 07, 1870 | H.K. Porter | Improvement in saw-set |
 | 103,926 | Jun. 07, 1870 | H.K. Porter | Improvement in calipers |
 | 104,995 | Jul. 05, 1870 | H.K. Porter | Lathe Center |
 | RE5,653 | Nov. 11, 1873 | H.K. Porter, T.W. Porter | Improvement in vises |
 | 226,190 | Apr. 06, 1880 | H.K. Porter | Bolt-cutter |
 | 236,695 | Jan. 18, 1881 | H.K. Porter | Bolt-cutter |
 | 484,670 | Oct. 18, 1892 | H.K. Porter | Bolt-clipper |
| | 909,663 | Jan. 12, 1909 | H.K. Porter | Bolt Clipper |
