| Patents for Lester F. Nenninger |
Patents 1 -
10
of 91
      |
| Picture | Number | Date | Patentee | Title |
 | 1,315,722 | Sep. 09, 1919 | R.T. Hazelton | Machine-tool |
| | 1,524,969 | Feb. 03, 1925 | L.F. Nenninger, S. Einstein | Centerless Grinding Machine |
| | 1,575,557 | Mar. 02, 1926 | L.F. Nenninger, S.F. Einstein | Work Rest and Guiding Device for Grinding Machines |
| | 1,575,558 | Mar. 02, 1926 | W.D. Archea, L.F. Nenninger, S. Einstein | Centreless Grinding Machine |
| | 1,625,738 | Apr. 19, 1927 | L.F. Nenninger | Machine Tool Clutch |
| | 1,654,213 | Dec. 27, 1927 | L.F. Nenninger, S. Einstein | Steady-Rest Mechanism for Grinding Machines |
| | 1,663,991 | Mar. 27, 1928 | L.F. Nenninger | Centerless Work Guide |
| | 1,679,413 | Aug. 07, 1928 | H.R. Isler, L.F. Nenninger, S. Einstein | Cutter Grinder |
| | 1,731,482 | Oct. 15, 1929 | L.F. Nenninger, H. Ernst | Spindle Oscillator |
| | 1,747,903 | Feb. 18, 1930 | L.F. Nenninger | Machine Tool Control |
