| Patents for T. W. Porter |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 30,009 | Sep. 11, 1860 | J.W. Strange | Spring Dividers | calipers |
| 104,995 | Jul. 05, 1870 | H.K. Porter | Lathe Center | metal lathe accessories and attachments |
| 218,844 | Aug. 26, 1879 | A. Webster | Improvement in mechanical movements | watchmaker |
| 271,595 | Feb. 06, 1883 | S.A. Bostwick | Pipe Wrench | pipe wrenches |
| 324,378 | Aug. 18, 1885 | J.T. Hayden | Pipe Wrench | chain and strap wrenches |
| 326,342 | Sep. 15, 1885 | J.C. Smith | Adjustable Concentric Channeler | adjustable drill bits |
| 331,812 | Dec. 08, 1885 | J. Norris | Cushioned Nippers and Pliers For Glass Cutters' Use | pliers |
| 391,488 | Oct. 23, 1888 | E. Smith | Surface Gage | surface gauges |
| 467,067 | Jan. 12, 1892 | W. Vanderman | Combination die-stock and reamer | tap wrenches and die stocks |
