| Patents for ETTCO Tool & Machine Co., Inc. |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 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 |
| 3,051,013 | Aug. 28, 1962 | A.I. Zagar | Forward and reverse friction drive tapping attachment | tapping machines |
| 3,064,497 | Nov. 20, 1962 | A.I. Zagar | Extensible tool supporting arm for drill and tap drive heads | tapping machines |
| 4,786,221 | Nov. 22, 1988 | K.L. March | Quick release chuck mechanism and method for achieving interchange ability of tool inserts therein | tapping machines |
| 4,795,291 | Jan. 03, 1989 | K.L. March | Method for achieving interchangeability of tool inserts | tapping machines |
