| All Patents in class 451/237 |
Patents 46 -
60
of 72
      |
| Number | Date | Patentee | Title | Type |
| 1,323,452 | Dec. 02, 1919 | S.A. Cogsdill | Machine for Grinding Tools | tool grinders |
| 1,472,827 | Nov. 06, 1923 | A.W. Erdman | Cutter Grinding Attachment | grinding attachments |
| 1,588,856 | Jun. 15, 1926 | J.C. Shaw | Contouring tracer | flexible shafts |
| 1,668,746 | May 08, 1928 | A. Turner | Roll-Grinding Machine | grinding machines |
| 1,796,054 | Mar. 10, 1931 | C.I. Shawver | Woodworking machine | molders |
| 1,919,144 | Jul. 18, 1933 | C. Booth | Grinding Machine | grinding machines |
| 1,972,623 | Sep. 04, 1934 | R.E. Harrison | Grinding Machine | grinding machines |
| 2,120,196 | Jun. 07, 1938 | L.W. Wright | Hydraulic Contouring Attachment for Machine Tools | milling machine accessories |
| 2,178,848 | Nov. 07, 1939 | C. Booth | Form Grinding Machine | grinding machines |
| 2,292,875 | Aug. 11, 1942 | R.E. Flanders | Tool Carrier Control Mechanism | thread grinders |
| 2,304,580 | Dec. 08, 1942 | J.M. Luers | Grinding Machine | grinding machines |
| 2,330,890 | Oct. 05, 1943 | H. Horlacher | Profile Milling Machine | milling machines |
| 2,335,305 | Nov. 30, 1943 | F.A. Parsons | Machine Tool Transmission and Control Mechanism | milling machines |
| 2,335,625 | Nov. 30, 1943 | J.C. Wilson | Grinding Machine | grinders |
| 2,392,819 | Jan. 15, 1946 | S.G. Brady, I.J. Gruenberg | Gear Grinding Machine | gear grinding machines |
