| Patents Granted on 1931-07-21 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,815,037 | Jul. 21, 1931 | R.E. De Walt | Sawing machine | radial arm saws |
| 1,815,216 | Jul. 21, 1931 | . | Square and Miter Attachment for Saws | |
| 1,815,233 | Jul. 21, 1931 | J. Burke | Terminal block | electrical connectors |
| 1,815,414 | Jul. 21, 1931 | R.W. Lord | Strap Clamp and Block | vises |
| 1,815,490 | Jul. 21, 1931 | C. Bouillon | Follow Rest | metal lathe accessories and attachments |
| 1,815,562 | Jul. 21, 1931 | L.E. Godfriaux | Hydraulic Chuck | metal lathe chucks |
| 1,815,574 | Jul. 21, 1931 | R.J. Miller | Stock Bar Feeder | metal lathe accessories and attachments |
| 1,815,639 | Jul. 21, 1931 | C.B. Coldwell, J.T. Wilkin | Flexible coupling | industrial machine shaft couplings |
| 1,815,647 | Jul. 21, 1931 | L.H. Blood | Broaching Machine | broaching machines |
| 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 |
| 1,815,837 | Jul. 21, 1931 | B.A. Deisch | Can testing machine | can making machines |
