| All Patents in class 279/103 |
Patents 16 -
30
of 55
      |
| Number | Date | Patentee | Title | Type |
| 1,034,723 | Aug. 06, 1912 | A.C. Schuerrmann, H. Mueller | Tool-retaining device for boring-bars | boring bars |
| 1,040,258 | Oct. 08, 1912 | F. Barter | Tool Holder and Ejector | drilling and boring tool holders |
| 1,041,338 | Oct. 15, 1912 | C.A. Palmgren | Drill and chuck | drill chucks |
| 1,069,614 | Aug. 05, 1913 | W.G. Lueters, C.F. Heinkel | Automatic Combination Tool Holder | drilling and boring tool holders |
| 1,087,330 | Feb. 17, 1914 | L.H. Smith | Drill-chuck | drill chucks |
| 1,099,392 | Jun. 09, 1914 | R.A. Norling | Pneumatic-turbine drill | pneumatic tools |
| 1,252,253 | Jan. 01, 1918 | J.C. Dufresne | Chuck | |
| 1,252,335 | Jan. 01, 1918 | R.E. Foote | Tapered Sleeve | drilling and boring tool holders |
| 1,256,222 | Feb. 12, 1918 | J.F. Graybill | Drill Socket | drill press chucks |
| 1,264,370 | Apr. 30, 1918 | L. Groff | Drill | metalworking twist drills |
| 1,296,133 | Mar. 04, 1919 | T.E. Stuart | Tool Holder | drilling and boring tool holders |
| 1,411,335 | Apr. 04, 1922 | R.E. Foote | Cutter for Woodruff keys | |
| 1,412,469 | Apr. 11, 1922 | F.A. Jimerson | Fluid-actuated rotary tool | pneumatic tools |
| 1,422,058 | Jul. 04, 1922 | V. Hovanec | Tool Holder | drilling and boring tool holders |
| 1,442,234 | Jan. 16, 1923 | F.H. Petersen | Tool Holder | drilling and boring tool holders |
