| Patents Granted on 1931-03-24 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| D83,743 | Mar. 24, 1931 | E.M. Bowen, A. Oberhoffken | Machine Tool | milling machines |
| 1,797,253 | Mar. 24, 1931 | C.S. Weyandt | Reciprocating motor | handheld power tools |
| 1,797,279 | Mar. 24, 1931 | E.J. Witchger | Radius gauges | special purpose gauges |
| 1,797,361 | Mar. 24, 1931 | C.M. Park, B.E. Bark | Attachment for power drills | handheld power tool accessories |
| 1,797,422 | Mar. 24, 1931 | J.V. Jardine | Pipe-threading apparatus | |
| 1,797,463 | Mar. 24, 1931 | C. Cederholm | Rotary woodworking cutter | cutterheads |
| 1,797,547 | Mar. 24, 1931 | G.M. Class | Lubricating Device for the Ways of Lathes | metalworking machine lubrication |
| 1,797,673 | Mar. 24, 1931 | C.J. Pender | Cane Slicer and Leveler Attachment for Sugar Mill Rolls | sugar cane apparatus |
| 1,797,704 | Mar. 24, 1931 | E.J. Svenson | Feed mechanism for lathes | |
| 1,797,705 | Mar. 24, 1931 | E.J. Svenson | Machine tool | |
| 1,797,730 | Mar. 24, 1931 | E.M. Pfauser | Socket Attachment for Tools | socket wrenches |
| 1,797,944 | Mar. 24, 1931 | F. Dustan | Tool Holder | tool holders |
| 1,797,986 | Mar. 24, 1931 | F.C. King | Tool Holder | tool holders |
| 1,798,059 | Mar. 24, 1931 | M.F. Hill, H. Bilgram | Machine for making rotors | gear making machines |
| 1,798,082 | Mar. 24, 1931 | E.B. Grutzbach | Hammer attachment for electric drills | handheld power tool accessories |
