| Patents Granted on 1930-12-?? |
Patents 1 -
15
of 43
      |
| Number | Date | Patentee | Title | Type |
| 1,783,250 | Dec. 02, 1930 | R.E. Manley | Lever mechanism | screw presses |
| 1,783,260 | Dec. 02, 1930 | R.W. Reed | Clapboard Gage | clapboard markers |
| 1,783,330 | Dec. 02, 1930 | W.W. Edwards | Saw guide | bandsaw guides |
| 1,783,541 | Dec. 02, 1930 | F. Neumann, W.J. Hogg | Tool Holder | drilling and boring tool holders |
| 1,783,713 | Dec. 02, 1930 | H.V. Holman | Adjustable clamp | bar and pipe clamps |
| 1,783,884 | Dec. 02, 1930 | C.C. Lee | Valve-seat liner | valve and seat maintenance |
| DE-513,722 | Dec. 04, 1930 | n. listed | Cylindrical Grinding Machine With Swiveling Workpiece Holder in and Out of Grinding Position | cylindrical grinders |
| CA-306,593 | Dec. 09, 1930 | N.M. Marsilius | Milling machine | milling machines |
| 1,784,102 | Dec. 09, 1930 | E.E. Dreese, J.F. Lincoln | Dynamo Electric Machine | electric generators |
| 1,784,133 | Dec. 09, 1930 | A.G. Decker | Electric drive for grinder wheels | |
| 1,784,203 | Dec. 09, 1930 | H.G. Rice | Holder For Socket Wrench Sets | wrench set holders |
| 1,784,231 | Dec. 09, 1930 | F.E. Gardner | Grinding machine | disk sanders |
| 1,784,380 | Dec. 09, 1930 | W.B. Murdoch | Bit or Drill Holder | brace chucks |
| 1,784,488 | Dec. 09, 1930 | N. Jenkins | Combination tool | combination cork extractors |
| DE-514,333 | Dec. 11, 1930 | n. listed | Feeding of the Workpieces, in Particular Balls, to Machines for Centerless Grinding | centerless grinders |
