| Patents Granted on 1939-09-?? |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 2,171,589 | Sep. 05, 1939 | E.W. Miller | Involute Measuring Machine | gear measuring machines |
| 2,171,802 | Sep. 05, 1939 | A.C. Nielsen | Tool Holder | lathe tool holders and tool posts |
| 2,171,940 | Sep. 05, 1939 | V.C. Macnabb | Sound Reproducing Apparatus | radios |
| 2,172,070 | Sep. 05, 1939 | C.A. Palmgren | Chuck | drill chucks |
| 2,172,135 | Sep. 05, 1939 | A.A. Breuer | Suction cleaner motor construction | vacuum cleaners |
| 2,172,274 | Sep. 05, 1939 | R.H. Crouch | Straight-line cut-off saw | radial arm saws |
| CA-383,970 | Sep. 12, 1939 | W.C. Tucker | Shearing machine device | metal shearing machines |
| 2,172,823 | Sep. 12, 1939 | A. Von Wangenheim | Control Device | temperature controls |
| 2,172,999 | Sep. 12, 1939 | W.G. Hoelscher | Electrically Controlled Automatic Lathe | automatic lathes |
| 2,173,074 | Sep. 12, 1939 | M. Romaine | Broaching Tool | broaches |
| D116,745 | Sep. 19, 1939 | F.J. Mayer | Splicing Sleeve Compressing Tool | crimping pliers |
| 2,173,215 | Sep. 19, 1939 | E.T. Shover | Combination Plier and Wrench | pliers |
| 2,173,318 | Sep. 19, 1939 | B. Wheeler | Steam Charging Device for Unfired Pressure Vessels | steam locomotives |
| 2,173,348 | Sep. 19, 1939 | . | Saw | |
| 2,173,360 | Sep. 19, 1939 | A.F. Froussard | Shaft Coupling | industrial machine shaft couplings |
