| All Patents in class 279/7 |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 1,395,939 | Nov. 01, 1921 | E.G. Hurlbut, F.A. Barnes | Stud Driver | stud drivers |
| 1,406,006 | Feb. 07, 1922 | B.M. Hanson | Tool Holder | metalworking machine tool holders |
| 1,802,574 | Apr. 28, 1931 | C. Rasmussen | Nipple-holding chuck | pipe threading machines |
| 2,286,292 | Jun. 16, 1942 | A.W. Mall | Spindle assembly | |
| 2,896,955 | Jul. 28, 1959 | W.A. Treppard | Tool Holder and Tool Assembly | drilling and boring tool holders |
| 2,902,892 | Sep. 08, 1959 | E.J. Nolan | Work-holder for a Machine Tool | metal lathe accessories and attachments |
