| Patents for Gustaf Robert Appelberg |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 1,938,310 | Dec. 05, 1933 | G.R. Appelberg, D.B. Bullard | Spindle Drive for Machine Tools | multiple spindle machines |
| 2,086,837 | Jul. 13, 1937 | G.R. Appelberg | Stroke Control Adjustment for Machine Tools | |
| 2,086,838 | Jul. 13, 1937 | G.R. Appelberg | Double Index Mechanism | |
| 2,086,852 | Jul. 13, 1937 | E.P. Bullard, E.C. Bullard, G.R. Appelberg, E.H. Johnson, F.H. Mussler | Machine Tool | |
| 2,122,356 | Jun. 28, 1938 | E.P. Bullard, G.R. Appelberg | Fluid Chuck Operating Mechanism | |
| 2,385,605 | Sep. 25, 1945 | E.P. Bullard, G.R. Appelberg, E.H. Johnson | Machine Tool | |
| 2,540,186 | Feb. 06, 1951 | E.P. Bullard, G.R. Appelberg, E.G. Bjorklund, E.N. Cowell, C.M. Grinage, E.H. Johnson, P.H. Lange, F.H. Mussler | Machine Tool | |
