| All Patents in class D15 |
Patents 316 -
330
of 400
      |
| Number | Date | Patentee | Title | Type |
| 2,793,479 | May 28, 1957 | P.C. Durland, M.H. Arms | Internal grinding machine | grinders |
| D180,614 | Jul. 09, 1957 | J.D. Osborn | Horizontal boring machine | horizontal drilling machines |
| D180,640 | Jul. 09, 1957 | E.W. Buck | Magnetic drill support | drill presses |
| D180,929 | Sep. 10, 1957 | S.J. Burwell | Cut-off machine for metal stock | metal sawing machines |
| D181,400 | Nov. 12, 1957 | S.M. Babbitt | Precision boring machine | drill presses |
| 2,812,621 | Nov. 12, 1957 | R.C. Evans, W.J. Blazek, C.R. Barkley | Apparatus for automatically forming and finishing grooves in workpieces | sharpening machines |
| D181,598 | Dec. 03, 1957 | F.E. Munschauer, Jr., R.G. Beiter | Circular shear | metal shearing machines |
| 2,827,085 | Mar. 18, 1958 | W.F. Ocenasek | Band saw guides and guards | bandsaws |
| D183,297 | Aug. 05, 1958 | G.H. Brown | Impacting machine or similar article | |
| 2,846,756 | Aug. 12, 1958 | R.E. Novkov | Cutoff Tool and Holder Therefor | insert tool holders |
| 2,850,054 | Sep. 02, 1958 | W.A. Eschenburg | Tilting arbor saw | tablesaws |
| D184,184 | Dec. 30, 1958 | J.R. Mango, R.E. Hughes | Radial saw | radial arm saws |
| D184,268 | Jan. 13, 1959 | H.W. Vogl | C Clamp | C clamps |
| D184,835 | Apr. 07, 1959 | R.B. Snyder, Jr. | Drill press | drill presses |
| D185,061 | May 05, 1959 | F.S. Brennan | Band saw | bandsaws |
