| Patents for none listed |
Patents 1216 -
1230
of 3298
      |
| Number | Date | Patentee | Title | Type |
| 1,807,625 | Jun. 02, 1931 | H.J. Hjorth | Valve Wrench | wrenches |
| 1,808,190 | Jun. 02, 1931 | F.J. Vlchek | Wrench Set Unit | wrench set holders |
| 1,808,462 | Jun. 02, 1931 | M. Horeth | Hub Cap Wrench | automotive specialty wrenches |
| 1,808,856 | Jun. 09, 1931 | F.W. Miller | Valve Grinder | valve grinding tools |
| 1,809,450 | Jun. 09, 1931 | A.I. Platt | Wrench Kit Holder | wrench set holders |
| 1,809,805 | Jun. 09, 1931 | F.J. Vlchek | Drop Hammer | drop hammers |
| GB-350,921 | Jun. 15, 1931 | n. listed | Improvements in or Relating to Machines for Grinding Rolls and the Like | grinding machines |
| 1,810,108 | Jun. 16, 1931 | W.C. Kress | | wrench set holders |
| 1,811,137 | Jun. 23, 1931 | W.C. Kress | Socket Wrench | socket wrenches |
| 1,811,452 | Jun. 23, 1931 | J.E. Blalock | Pipe Wrench | pipe wrenches |
| 1,814,014 | Jul. 14, 1931 | S. Vitali | Gripping Tool For Jars | jar wrenches |
| 1,814,151 | Jul. 14, 1931 | S.N. Gundlach | Shingle Cutter | splitting and shearing machinery |
| 1,815,490 | Jul. 21, 1931 | C. Bouillon | Follow Rest | metal lathe accessories and attachments |
| 1,815,665 | Jul. 21, 1931 | G.F. Colley | Tool For Handling Storage Batteries | pliers |
| 1,815,804 | Jul. 21, 1931 | D.J. La Bauve, R.E. Siess | Ratchet Wrench | ratchet wrenches |
