| All Patents of Type: lapping machines |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 1,486,337 | Mar. 11, 1924 | W.E. Hoke | Machine for Making Gauges and Other Articles | lapping machines |
| 1,744,886 | Jan. 28, 1930 | W.F. Groene | Lapping machine | lapping machines |
| 1,878,603 | Sep. 20, 1932 | A.E. Robinson | Lapping Machine | gear lapping machines |
| 1,916,117 | Jun. 27, 1933 | A.E. Robinson | Lapping Machine | gear lapping machines |
| 1,916,118 | Jun. 27, 1933 | W.G. Hoelscher, A.E. Robinson | Lapping Machine | gear lapping machines |
| 1,989,651 | Jan. 29, 1935 | R.S. Drummond | Method of finishing gears | gear making machines |
| 1,989,652 | Jan. 29, 1935 | R.S. Drummond | Method for finishing internal gears | gear making machines |
| 2,111,045 | Mar. 15, 1938 | R.S. Drummond | Lapping machine | gear making machines |
| 2,111,271 | Mar. 15, 1938 | L.F. Nenninger | Apparatus for Lapping | lapping machines |
| 2,209,071 | Jul. 23, 1940 | E.J. Bullard | Grinding and Lapping Machine | lapping machines |
| 2,391,388 | Dec. 25, 1945 | E.J. Bullard | Grinding and Lapping Machine | lapping machines |
| 2,456,061 | Dec. 14, 1948 | G. Hohwart | Double end center lapping machines | lapping machines |
| 2,480,285 | Aug. 30, 1949 | E.J. Bullard | Lapping Machine | lapping machines |
| 2,565,590 | Aug. 28, 1951 | E.J. Bullard | Lapping Machine | lapping machines |
| GB-772,246 | Jun. 04, 1953 | K.L. Lindmark | Improvements in and relating to lapping machines | lapping machines |
