| All Patents in class 33/21.1 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 213,691 | Mar. 25, 1879 | H. Reichardt | Tool for Cutting Pipe | pipe cutters |
| 461,966 | Oct. 27, 1891 | M. Tannenbaum, M. Gottdiner | Marking Tool for Lathes | wood lathe accessories |
| 558,951 | Apr. 28, 1896 | G.W. Hodges | Carving machine | carving machines |
| 660,688 | Oct. 30, 1900 | W. Lipsy | Scribing Tool | special purpose gauges |
| 1,043,322 | Nov. 05, 1912 | G.W. Kountz | Marking Tool Holder | tool holders |
| 2,717,401 | Sep. 13, 1955 | W. Zehden, G.E. Fensom, A.C. Menzies | Device for Cutting Very Fine Screw Threads | screwcutting lathes |
