| All Patents in class 279/49 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 184,445 | Nov. 14, 1876 | S.N. Trump, C.N. Trump | Collet chuck | drill press chucks |
| 195,997 | Oct. 09, 1877 | C. Elterich | Improvement in drill-chucks | drill chucks |
| 196,205 | Oct. 16, 1877 | C. Elterich, A.H. Briggs | Improvement in drill-chucks | drill chucks |
| 207,113 | Aug. 20, 1878 | C. Elterich, A.H. Briggs | Improvement in drill-chucks | drill chucks |
| 256,739 | Apr. 18, 1882 | G. Rehfuss | Drill Chuck | drill press chucks |
| 316,912 | Apr. 28, 1885 | W.M. Preston | Frictional centering chuck for watch makers | watchmaker |
| 493,231 | Mar. 07, 1893 | A. Muir | Chuck | drill press chucks |
| 529,401 | Nov. 20, 1894 | H. Pratt, W.H. McCoy | Spiral screw driver and drill | spiral screwdrivers |
| 802,449 | Oct. 24, 1905 | S.W. Goodhue | Cushion Tool Holder for Pneumatic Hammers | tool holders |
| 1,115,071 | Oct. 27, 1914 | N.B. Healy | Valve Dressing Tool | valve grinding tools |
| 1,320,113 | Oct. 28, 1919 | E.W. Bemis | Chuck | metal lathe chucks |
| 1,863,108 | Jun. 14, 1932 | J.C. Glenzer | Tool Holder | drilling and boring tool holders |
| 1,899,843 | Feb. 28, 1933 | T.D. Bascom | Tool holder | drill press chucks |
| 1,973,942 | Sep. 18, 1934 | J.F. Buhr | Socket Collet Structure | drill press accessories |
| 1,987,504 | Jan. 08, 1935 | J. Denz | Tool Holder | drilling and boring tool holders |
