| All Patents in class 451/242 |
Patents 1 -
15
of 109
      |
| Number | Date | Patentee | Title | Type |
| 152,632 | Jun. 30, 1874 | P.W. Hart | Improvement in machines for sawing laths | lath making machines |
| 189,483 | Apr. 10, 1877 | M.H. McNair | Devices for Fitting and Polishing Cylinders and Rings | mandrels and arbors |
| 302,644 | Jul. 29, 1884 | H.C. Albee | Concentric lathe | wood lathes |
| 396,553 | Jan. 22, 1889 | J.L. Fowle | Machinery for grinding metallic bands | tool making machines |
| 401,550 | Apr. 16, 1889 | W. Gibson, R. Ray | Apparatus for shaving barrels, &c. | barrel making machines |
| 562,268 | Jun. 16, 1896 | F. Ashton | Apparatus for Grinding Parallel Spindles Rods or Shafts | cylindrical grinders |
| 1,106,803 | Aug. 11, 1914 | R.H. Grant | Grinding-machine | cylindrical grinders |
| 1,483,748 | Feb. 12, 1924 | F.C. Sanford | Grinding Machine | centerless grinders |
| 1,575,557 | Mar. 02, 1926 | L.F. Nenninger, S.F. Einstein | Work Rest and Guiding Device for Grinding Machines | centerless grinders |
| 1,611,048 | Dec. 14, 1926 | C. Knowles | Back Rest for Cylindrical Grinders | cylindrical grinders |
| 1,639,958 | Aug. 23, 1927 | C.H. Norton | Centerless Grinding Machine | grinding machines |
| 1,647,131 | Nov. 01, 1927 | L.R. Heim | Grinding | grinding machines |
| 1,659,237 | Feb. 14, 1928 | C. Booth | Grinding | grinding machines |
| 1,663,991 | Mar. 27, 1928 | L.F. Nenninger | Centerless Work Guide | grinding machines |
| 1,683,974 | Sep. 11, 1928 | L.R. Heim | Grinding Apparatus | grinding machines |
