| All Patents in class 279/50 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 144,178 | Oct. 28, 1873 | C.V. Woerd | Watchmakers' Lathes | watchmakers lathes |
| 427,930 | May 13, 1890 | T. Suchland | Clutch for Holding Disks | metal lathe chucks |
| 506,178 | Oct. 03, 1893 | E. Koenig | Machine for Shaping Buttons of Mother of Pearl | button making machinery |
| 549,915 | Nov. 19, 1895 | J.F. Healey | Pearl Button Turning Machine | button making machinery |
| 628,730 | Jul. 11, 1899 | F. Harrington, A. Whitney | Work Holder for Lathe Spindles | metal lathe chucks |
| 855,280 | May 28, 1907 | V.E. Campbell | Interchangeable and Adjustable Screw Driver and Combined Tool Holder | tool holders |
| 935,977 | Oct. 05, 1909 | H.W. Haskell | Tool Holder | tool holders |
| 2,335,721 | Nov. 30, 1943 | F.G. Zagar | Indexing chuck | indexers and dividers |
| 2,420,067 | May 06, 1947 | H.E. Crozier | Collet attachment for lathes or other metalworking machines | collets and collet holders |
| 2,466,651 | Apr. 05, 1949 | F.G. Zagar | Chuck | metal lathe chucks |
| 2,809,844 | Oct. 15, 1957 | C. Tree | Tool Holder | milling machine tools |
| 2,816,768 | Dec. 17, 1957 | A.M. Stoner, G.S. Haviland | Lever operated collet chuck | metal lathe chucks |
| 2,868,550 | Jan. 13, 1959 | M.L. Valentino, J.L. Maryanski | Collet | |
| 2,994,538 | Aug. 01, 1961 | L. Farnsworth | Collet chuck having an axially stationary collet | work holding |
| 2,998,259 | Aug. 29, 1961 | L. Farnsworth | Collet and chuck therefor | work holding |
