| All Patents in class 451 |
Patents 2131 -
2145
of 2173
      |
| Number | Date | Patentee | Title | Type |
| 3,789,709 | Feb. 05, 1974 | D.E. Roseberry, G.A. Kendall | Orbital crankshaft lathe | crankshaft lathes |
| 3,818,645 | Jun. 25, 1974 | J. McEwan | Grinding wheel adapter | |
| 3,822,513 | Jul. 09, 1974 | G.P. Holther, Jr. | Bench grinder with flexible shaft accessory | bench or pedestal grinders |
| 3,832,808 | Sep. 03, 1974 | F.W. Kiser | Abrasive belt-type lumber planing machine | sanding machines |
| 3,895,464 | Jul. 22, 1975 | F.W. Kiser | Lumber dressing and dimensioning machine | sanding machines |
| 3,934,657 | Jan. 27, 1976 | I.R. Danielson | Dual safety control means for a power tool | |
| 4,021,970 | May 10, 1977 | W.C. Przygocki | Wide abrasive belt tension and oscillation assembly | sanding machines |
| 4,022,012 | May 10, 1977 | G.W. Balz | Surface Finishing Machine | metalworking machines |
| 4,077,736 | Mar. 07, 1978 | M.L. Hutchens | Drill speeder for machine tools | |
| 4,088,856 | May 09, 1978 | L.W. Tebben | Perimeter safety switch mounted to support disposed remote from machine body | sanding machines |
| 4,133,423 | Jan. 09, 1979 | F. Zankl | Shuttle system for machine tool | |
| 4,178,721 | Dec. 18, 1979 | F.D. Evans | Apparatus for sizing and finishing batches of lumber | sanding machines |
| 4,211,512 | Jul. 08, 1980 | F. Zankl | Rotary table with ballscrew drive | |
| 4,242,926 | Jan. 06, 1981 | N.T. Anton | Device for sharpening saw chains | |
| 4,322,918 | Apr. 06, 1982 | C.I. Steinback | Abrasive grinding machine | sanding machines |
