| Patents for Daniel R. Porter |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 266,310 | Oct. 24, 1882 | D.R. Porter | Combined Wrench, Vise and Nail Puller | combination tools |
| 278,265 | May 22, 1883 | D.R. Porter | Wrench | self-adjust wrenches |
| 291,933 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches |
| 291,934 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches |
| CA-20,932 | Jan. 22, 1885 | D.R. Porter | Wrench | pipe wrenches |
| 325,010 | Aug. 25, 1885 | D.R. Porter | Wrench | pipe wrenches |
| CA-27,657 | Sep. 22, 1887 | D.R. Porter | Pipe Wrench | quick adjust wrenches |
| 376,396 | Jan. 10, 1888 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 389,899 | Sep. 25, 1888 | D.R. Porter | Pipe Wrench | quick adjust wrenches |
| GB-188,901,609 | Jan. 29, 1889 | H.H. Lake, D.R. Porter | Pipe Wrenches | pipe wrenches |
| CA-30,994 | Mar. 22, 1889 | D.R. Porter | Pipe Wrench | pipe wrenches |
| CA-31,072 | Apr. 09, 1889 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 426,956 | Apr. 29, 1890 | D.R. Porter | Improved Pipe Wrench | pipe wrenches |
| 450,681 | Apr. 21, 1891 | D.R. Porter | Wrench | pipe wrenches |
| GB-189,106,878 | Apr. 21, 1891 | D.R. Porter | Wrenches | wrench jaw components |
