| All Patents in class 451/28 |
Patents 16 -
29
of 29
      |
| Number | Date | Patentee | Title | Type |
| 2,691,255 | Oct. 12, 1954 | J.Y. Blazek | Brake shoe and lining grinder | brake maintenance |
| 2,731,774 | Jan. 24, 1956 | W.L. Davis, E.J. Sieber, Jr. | Centerless Grinding Machine with Work Rotating and Feeding Support | centerless grinders |
| 2,785,511 | Mar. 19, 1957 | J.C. Wilson | Grinding Machine and Method of Operation | surface grinders |
| 2,826,540 | Mar. 11, 1958 | G.F. Keeleric | Method and apparatus for electrolytic cutting, shaping, and grinding | electrochemical machining |
| 3,087,286 | Apr. 30, 1963 | F.G. Krafft | Feeding method and apparatus | grinders |
| 3,277,613 | Oct. 11, 1966 | W. Dralle, S.G. Brady | Grinding Method | grinders |
| 3,410,028 | Nov. 12, 1968 | M.R. Estabrook | Control of automatic abrading machines | |
| 4,676,030 | Jun. 30, 1987 | H.W. Lawson, Jr. | Apparatus and Method for Detecting a Tool Edge | electronic gauges |
| 4,833,831 | May 30, 1989 | W.T. Armstrong, Jr. | Apparatus and Method for Sizing and Finishing Fixed Jaw Openings of Open-Ended Wrenches | wrench components |
| 5,081,794 | Jan. 21, 1992 | D.E. Haney | Sander with orbiting platen and abrasive | sanding machines |
| 5,702,287 | Dec. 30, 1997 | D.E. Haney | Sander with orbiting platen and abrasive | sanding machines |
| 5,807,162 | Sep. 15, 1998 | A.P. Dana | Grinding Apparatus, and Process for the Operation Thereof | surface grinders |
| 7,004,818 | Feb. 28, 2006 | D.E. Haney | Sander with orbiting platen and abrasive | sanding machines |
| 7,585,206 | Sep. 08, 2009 | J.R. Memmelaar, Jr. | Spool to Spool Continuous Through Feed System | centerless grinders |
