| All Patents in class 192/51 |
Patents 16 -
20
of 20
      |
| Number | Date | Patentee | Title | Type |
| 3,005,526 | Oct. 24, 1961 | A.I. Zagar | Conical clutch sleeves for tapping attachments | tapping machines |
| 3,005,527 | Oct. 24, 1961 | A.I. Zagar | Positive drive tapping attachments | tapping machines |
| 3,030,818 | Apr. 24, 1962 | A.I. Zagar | Positive drive tapping attachments | tapping machines |
| 3,145,401 | Aug. 25, 1964 | F.G. Burg | Lead screw operated tapping spindle with quick acting reversing means | drill presses |
| 3,323,622 | Jun. 06, 1967 | A.G. Troka | Cone Clutches | drill press accessories |
