| All Patents in class 408/91 |
Patents 16 -
30
of 36
      |
| Number | Date | Patentee | Title | Type |
| 355,679 | Jan. 11, 1887 | A.F. Brewer | Supplemental Bed Plate Centering Device and Work Holder for Drilling or Slotting Machines | drill press accessories |
| 359,270 | Mar. 15, 1887 | C. McNeal | Boring Machine | |
| 447,014 | Feb. 24, 1891 | P. Pryibil | Machine for drilling to pattern | drilling and boring |
| 461,951 | Oct. 27, 1891 | F.L. Eberhardt, U. Eberhardt | Column Drill Press | |
| 628,981 | Jul. 18, 1899 | G. Griffin | Automatic Button Lathe | button making machinery |
| 900,109 | Oct. 06, 1908 | F. Marsellis | Railroad Track Drilling Machine | rail drilling machines |
| 1,068,324 | Jul. 22, 1913 | L.H. Colburn | Compound Table for Drill Presses | drill presses |
| 1,082,866 | Dec. 30, 1913 | S.C. Hilles, B.V. Colburn | Paper drilling machine | drill presses |
| 1,217,572 | Feb. 27, 1917 | C.C. Craley | Metal Working Apparatus | drill press accessories |
| 1,502,339 | Jul. 22, 1924 | F.A. Jimerson | Bonding drill | pneumatic tools |
| 1,660,435 | Feb. 28, 1928 | C.C. Craley | Metal Working Machinery | drill press accessories |
| 2,019,774 | Nov. 05, 1935 | R.M. Woytych | Carriage Support | metalworking machine mechanisms |
| 2,167,189 | Jul. 25, 1939 | J. Verderber | Machine Tool | metalworking machines |
| 2,406,514 | Aug. 27, 1946 | R.C. Squire | Roll V Block Support | V blocks |
| 2,473,506 | Jun. 21, 1949 | E.P. Bullard | Positioning Device | |
