| Patents for R. B. Tewksbury |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 965,403 | Jul. 26, 1910 | H.W. Oster | Die-stock |
| | 977,540 | Dec. 06, 1910 | H.W. Oster | Thread-cutting mechanism |
| | 977,541 | Dec. 06, 1910 | H.W. Oster | Die-stock |
| | 1,044,808 | Nov. 19, 1912 | H.W. Oster | Die-stock |
 | 1,128,034 | Feb. 09, 1915 | H.W. Oster | Die-stock |
 | 1,139,063 | May 11, 1915 | H.W. Oster | Lathe attachment for stamping markings |
 | 1,150,449 | Aug. 17, 1915 | H.W. Oster | Die-stock |
 | 1,258,239 | Mar. 05, 1918 | H.W. Oster | Tap |
 | 1,280,823 | Oct. 08, 1918 | H.W. Oster | Mechanism for closing and finishing the ends of metal tubes |
