| All Patents in class 451/214 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 188,126 | Mar. 06, 1877 | P.M. Haas | Improvement in machines for making balusters | wood lathes |
| 359,943 | Mar. 22, 1887 | G.H. Smith | Attachment for Grinding Machines | grinding attachments |
| 363,000 | May 17, 1887 | E. Rivett | Watch-maker's lathe | watchmakers lathes |
| 384,613 | Jun. 19, 1888 | C.S. Farrar | Machine for sharpening saws, &c. | saw sharpening machines |
| 614,247 | Nov. 15, 1898 | H. Goldsmith, E.T. Goodhew | Grinding Machine | tool grinders |
| 667,512 | Feb. 05, 1901 | C.H. Field | Gear Cutting Engine | gear making machines |
| 1,255,962 | Feb. 12, 1918 | E.D. Paul, C.C. Warner | Grinding Machine | |
| 1,750,956 | Mar. 18, 1930 | R.E. Flanders | Machine for Grinding Chasers | thread grinders |
| 2,276,625 | Mar. 17, 1942 | H.F. Patrick | Surface grinder | |
| 2,296,731 | Sep. 22, 1942 | R.H. Mustonen | Stop mechanism for grinding machines | grinders |
| 2,397,086 | Mar. 26, 1946 | S.G. Brady | Method and Apparatus for Cutting Keyways | milling machine accessories |
| 2,398,268 | Apr. 09, 1946 | J.C. Wilson | Machine Tool | machine tool controls |
| 2,426,807 | Sep. 02, 1947 | J.C. Wilson | Apparatus for Shaping Workpieces by Grinding | grinding attachments |
| 2,442,635 | Jun. 01, 1948 | R.D. Bennett | Spline or gear grinder | gear making machines |
| 2,625,772 | Jan. 20, 1953 | J.C. Moore | Machine for sharpening pipe wrench jaws | sharpening machines |
