| Patents for none listed |
Patents 2131 -
2145
of 3199
      |
| Number | Date | Patentee | Title | Type |
| 2,551,242 | May 01, 1951 | V.H. Burwinkle | Micrometer Attachment | micrometers |
| 2,551,359 | May 01, 1951 | M. Wahlstrom, R.F. Bannow | Slotting Machine Operating at Universal Angles in Overall Locations | milling machine accessories |
| D163,265 | May 15, 1951 | L. Scusa, C.E. Dodd | Holder For Hexagonal Wrenches | wrench set holders |
| D163,282 | May 15, 1951 | E.A. Heschel | Motor Stethoscope or the Like | |
| 2,552,905 | May 15, 1951 | J.S. Panosian | Film Identifying Means for Photographic Camera Film Holders | film and plate holders |
| 2,553,397 | May 15, 1951 | W. Ames | Opposed Contact Distance Measure | test indicators |
| D163,385 | May 22, 1951 | A.H. Hawes | Combined Hammer, Spanner, Tommy Bar and Crowbar | combination tools |
| D163,422 | May 22, 1951 | P.F. Gassien, J.T. Runkle | Combination Tool | combination tools |
| 2,554,990 | May 29, 1951 | L.E. Kilness | Ratchet Mechanism | ratchet wrenches |
| GB-654,003 | May 30, 1951 | n. listed | Improvements in Linear Dimension Gauges | limit gages |
| 2,555,395 | Jun. 05, 1951 | O.A. Capra | Rocking Fulcrum For Adjustable and Pivotal Outer Wrench Jaws | screw adjust wrenches |
| 2,556,761 | Jun. 12, 1951 | C.R. Keene | Combined Micrometer Caliper and Dial Gauge | micrometers |
| 2,556,945 | Jun. 12, 1951 | E.M. Roddick | Backout or Nipple Wrench | pipe wrenches |
| 2,557,296 | Jun. 19, 1951 | W.C. Kress | Pivot for Adjustable Fulcrum Pliers | pliers |
| 2,557,840 | Jun. 19, 1951 | F.W. Preslan | Valve Seat Gauge | |
