| Patents Granted on 1931-06-__ |
Patents 1 -
15
of 52
      |
| Number | Date | Patentee | Title | Type |
| 1,807,625 | Jun. 02, 1931 | H.J. Hjorth | Valve Wrench | wrenches |
| 1,807,829 | Jun. 02, 1931 | E.P. Bullard, Jr. | Double Angular Tool Slide | |
| 1,807,896 | Jun. 02, 1931 | E. Cheshire | Vise | printer |
| 1,807,941 | Jun. 02, 1931 | E.B. Stimpson, J.F. Suessle | Feeding mechanism for riveting machines | riveting machines |
| 1,807,942 | Jun. 02, 1931 | E.B. Stimpson | Rivet feed | riveting machines |
| 1,807,999 | Jun. 02, 1931 | E.P. McMurtry | Universally Adjustable Tool Holder | sharpening tool holders |
| 1,808,190 | Jun. 02, 1931 | F.J. Vlchek | Wrench Set Unit | wrench set holders |
| 1,808,228 | Jun. 02, 1931 | J.W. Nissrod, E. Hulack | Attachment for electric drills | handheld power reciprocating saws |
| 1,808,240 | Jun. 02, 1931 | C.G. Mahana | Power Transmission Means | industrial machine clutches |
| 1,808,275 | Jun. 02, 1931 | F.N. Whitesell | Safety Apparatus | hoists, winches, come-alongs |
| GB-349,776 | Jun. 04, 1931 | J.P. Udal | Improvements relating to guards for machines of the platen type | metalworking machine safety guards |
| RE18,093 | Jun. 09, 1931 | E.P. Larsh | Short circuiting device for motor commutators | repulsion start induction run motors |
| 1,808,856 | Jun. 09, 1931 | F.W. Miller | Valve Grinder | valve grinding tools |
| 1,809,054 | Jun. 09, 1931 | C.L. Mattison | Chain feed drive | woodworking machine stockfeeding mechanisms |
| 1,809,363 | Jun. 09, 1931 | A.R. Teare | Material treating machine | food and drink mixers |
