| Patents Granted on 1957-07-30 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| D180,708 | Jul. 30, 1957 | J.P. Bruck | Portable power operated saber saw | handheld power reciprocating saws |
| CA-544,354 | Jul. 30, 1957 | H. Corbett | Apparatus for screening plastic materials | plastic molding machines |
| CA-544,355 | Jul. 30, 1957 | E.A. Reibig | Power transmission mechanism | metal lathes |
| 2,800,750 | Jul. 30, 1957 | H.M. Field | Abrasive tool | drum sanders |
| 2,800,759 | Jul. 30, 1957 | A.N. Emmons | Grass cutter blade mounting | |
| 2,800,821 | Jul. 30, 1957 | E.M. Frucella | Angularly Adjustable, Reversible Ratchet Wrench | angle adjustable wrenches |
| 2,800,823 | Jul. 30, 1957 | H. Tugend | Plier-Type Wrench | locking pliers |
| 2,800,824 | Jul. 30, 1957 | J.A. Dorman | Automatic Work Driver or Lathe Dog | metal lathe accessories and attachments |
| 2,800,839 | Jul. 30, 1957 | H. Horlacher | Contouring Machine | profiling machines |
