| Patents Granted on 1938-11-29 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 2,138,027 | Nov. 29, 1938 | J.L. Doll, C.W. Rogers | Internal combustion engine | |
| 2,138,117 | Nov. 29, 1938 | M.W. O'Brien, estate of (deceased), J.J. O'Brien | Belt Tighener | engine lathes |
| 2,138,194 | Nov. 29, 1938 | E.M. Pfauser | Hydraulic Pump | hydraulic pumps |
| 2,138,253 | Nov. 29, 1938 | E.J. Lynch | Tool Holder | metalworking machine tool holders |
| 2,138,264 | Nov. 29, 1938 | A.L. Warner | Work holder for mower sections | |
| 2,138,279 | Nov. 29, 1938 | R.F. Kneisley | Control switch | woodworking machine mechanisms |
| 2,138,331 | Nov. 29, 1938 | F.P. Ward | Ratchet Wrench | ratchet wrenches |
| 2,138,332 | Nov. 29, 1938 | C.R. Geisel | Wrench | ratchet wrenches |
| 2,138,522 | Nov. 29, 1938 | W.F. Groene, W.R. Meyer | Four-spindle drum type crankshaft lathe | crankshaft lathes |
| 2,138,576 | Nov. 29, 1938 | S.C. Gebert | Conveyor Feed Screw | conveyors and hoppers |
| 2,138,644 | Nov. 29, 1938 | E.C. Read | Piston structure for uniflow steam engines | steam engines |
| 2,138,725 | Nov. 29, 1938 | E.J. Brouhard | Drain Cock Wrench | drain cock wrenches |
| 2,138,727 | Nov. 29, 1938 | S.A. Cogsdill | Cutting Tool | reamers |
