| All Patents in class 408/239R |
Patents 1 -
15
of 71
      |
| Number | Date | Patentee | Title | Type |
| 120,351 | Oct. 24, 1871 | B.L. Walker | Holders for Screw Cutting Dies | tap and die holders |
| 140,727 | Jul. 08, 1873 | S.W. Putnam, Jr. | Improvement in nut-tapping machines | nut or bolt making machines |
| 161,311 | Mar. 23, 1875 | F.E. Wells | Screw-Threading Die | taps and dies |
| 187,600 | Feb. 20, 1877 | G. Collins | Combination Countersink, Screwdriver & Gimlet Bit | countersinks |
| 243,978 | Jul. 05, 1881 | G.S. Rominger | Three-jaw chuck with self-aligning jaws | |
| 295,904 | Apr. 01, 1884 | M.S. Brooks | Tap Wrench | tap wrenches and die stocks |
| 392,490 | Nov. 06, 1888 | C.E. Billings | Commutator-bar for dynamo-electric machines | motor commutators |
| 393,511 | Nov. 27, 1888 | S.D. Leland | Tap Driving Head | tap and die holders |
| 442,828 | Dec. 16, 1890 | C.P. Russell | Screw-cutting die | taps and dies |
| 460,922 | Oct. 06, 1891 | S.B. Minnich | Compensating bit-holder | |
| 464,659 | Dec. 08, 1891 | A.E. Brion | Tap Wrench | tap wrenches and die stocks |
| 506,961 | Oct. 17, 1893 | F.C. Williams | Tap Wrench | tap wrenches and die stocks |
| 549,250 | Nov. 05, 1895 | T.P. Owen | Tool Holder for Jewelers Lathes | lathe tool holders and tool posts |
| 720,554 | Feb. 17, 1903 | C. Benesh | Combined Wrench and Thread Cutter | alligator wrenches |
| 761,348 | May 31, 1904 | J.E. Bates | Chuck for Holding Sockets | chucks |
