| Patents Granted on 1957-12-?? |
Patents 1 -
15
of 34
      |
| Number | Date | Patentee | Title | Type |
| D181,598 | Dec. 03, 1957 | F.E. Munschauer, Jr., R.G. Beiter | Circular shear | metal shearing machines |
| 2,814,959 | Dec. 03, 1957 | F.L. Dodge | Variable speed drive | metal lathes |
| 2,814,964 | Dec. 03, 1957 | C.H. Werth | Contour boring and turning machine | vertical boring mills |
| 2,815,040 | Dec. 03, 1957 | R.V. Smith | Pressure relief valve | steam safety valves |
| D181,651 | Dec. 10, 1957 | A.M. Huntington | Andiron front | |
| D181,652 | Dec. 10, 1957 | A.M. Huntington | Andiron front | |
| D181,653 | Dec. 10, 1957 | A.M. Huntington | Andiron front | |
| D181,654 | Dec. 10, 1957 | A.M. Huntington | Andiron front | |
| D181,655 | Dec. 10, 1957 | A.M. Huntington | Andiron front | |
| 2,815,582 | Dec. 10, 1957 | E.S. Karstens | Shaft Aligning Fixture | |
| 2,815,627 | Dec. 10, 1957 | W.B. Eddison | Seal Opening and Applying Head | bottle cappers |
| 2,815,778 | Dec. 10, 1957 | H.V. Holman | Straight beam adjustable jaw clamp | bar and pipe clamps |
| 2,815,834 | Dec. 10, 1957 | A.W. Mall | Portable power tool drive mechanism | impact wrenches |
| 2,816,187 | Dec. 10, 1957 | A.E. Smith | Indicating Device | machine tool controls |
| 2,816,454 | Dec. 17, 1957 | A.T. Godschalx, E.E. Hosea | Positioning Means for Machine Tools | metalworking machine mechanisms |
