| All Patents in class 279/52 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 50,214 | Oct. 03, 1865 | C.H. Amidon | Bit stock | brace chucks |
| 212,110 | Feb. 11, 1879 | D. Powers, O. Peck | Improvement in bit-stocks | brace chucks |
| 890,894 | Jun. 16, 1908 | G.W. Leonard, W.H. Ehrhart | Bit-Extender | drill bit extensions |
| 904,501 | Nov. 24, 1908 | J.P. Bartholomew | Bit-Brace | brace chucks |
| 1,784,380 | Dec. 09, 1930 | W.B. Murdoch | Bit or Drill Holder | brace chucks |
| 1,850,297 | Mar. 22, 1932 | F.A. Volz | Bit or Drill Holder | brace chucks |
| 1,886,224 | Nov. 01, 1932 | J.M. Redinger | Cone Chuck | metalworking machine tool holders |
| 2,071,954 | Feb. 23, 1937 | L. Scruggs | Chuck or Tool Holder | chucks |
| 2,153,847 | Apr. 11, 1939 | L. Scruggs | Chuck or Tool Holder | metalworking machine tool holders |
| 2,193,917 | Mar. 19, 1940 | A.P. Albrecht, A.R. Bone | Bit Extension | drill bit extensions |
| 2,211,216 | Aug. 13, 1940 | J. Oster | Small power driven tool | handheld power tools |
| 2,286,292 | Jun. 16, 1942 | A.W. Mall | Spindle assembly | |
| 2,345,069 | Mar. 28, 1944 | E.B. Phillips | Collet chuck | metal lathe chucks |
| 2,396,760 | Mar. 19, 1946 | J.C. Thomas, III | Collet Closer | metal lathe accessories and attachments |
| 2,508,731 | May 23, 1950 | A.M. Stoner | Lathe chuck | metal lathe chucks |
