| Patents Granted on 1938-04-?? |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 2,112,840 | Apr. 05, 1938 | F.A. Haist | Method of Making Wrenches | screw adjust wrenches |
| 2,112,850 | Apr. 05, 1938 | P.C. Klingler, G.B. Scheffey | Punching machine and the like | punch presses |
| 2,112,896 | Apr. 05, 1938 | R.M. Husband | Apparatus for Cleaning Heat Exchangers and the Like | boiler repair tools |
| 2,113,087 | Apr. 05, 1938 | J. Jensen | Manually Operated Pressure Tool | metal punches |
| 2,113,124 | Apr. 05, 1938 | W.F. Zimmermann | Deflection Compensator | |
| 2,113,178 | Apr. 05, 1938 | C.G. Gase | Angle cutter | milling machine cutters |
| 2,113,287 | Apr. 05, 1938 | W.G. Baldenhofer | Machine for Grinding and Sharpening Broaches | broach sharpening machines |
| 2,113,362 | Apr. 05, 1938 | C.H. Amidon | Grinding Machine Headstock | cylindrical grinders |
| 2,113,414 | Apr. 05, 1938 | B.F. Stowell | Gauge Mechanism | grinding attachments |
| 2,113,447 | Apr. 05, 1938 | F. Hardinge | Water separator for fluid lines | separators |
| 2,113,509 | Apr. 05, 1938 | H.J. Siekmann, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| DE-658,533 | Apr. 08, 1938 | n. listed | Precision Measuring Device for Internal Measurements | bore gages |
| 2,113,623 | Apr. 12, 1938 | V.C. Macnabb | Sound Reproducing Apparatus | radios |
| 2,113,694 | Apr. 12, 1938 | O.A. Kehle | Rubbing machine | handheld power sanders |
| 2,114,108 | Apr. 12, 1938 | A. Hormel | Sheet feeding machine | printing presses |
