| Patents for J. D. H. Bergen |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 821,984 | May 29, 1906 | V.J. Wahlstrom, B.T. Burchardi | Clutch and counter-shaft mechanism |
 | 866,245 | Sep. 17, 1907 | V.J. Wahlstrom | Chuck |
 | 870,143 | Nov. 05, 1907 | V.J. Wahlstrom | Chuck |
 | 870,206 | Nov. 05, 1907 | V.J. Wahlstrom | Clutch |
 | 884,243 | Apr. 07, 1908 | V.J. Wahlstrom | Milling-machine |
 | 884,244 | Apr. 07, 1908 | V.J. Wahlstrom | Chuck |
 | 978,521 | Dec. 13, 1910 | V.J. Wahlstrom | Oil-cup |
 | 996,953 | Jul. 04, 1911 | V.J. Wahlstrom | Chuck |
 | 996,954 | Jul. 04, 1911 | V.J. Wahlstrom | Chuck |
 | 996,955 | Jul. 04, 1911 | V.J. Wahlstrom | Chuck |
