| Patents Granted on 1961-02-21 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 2,972,266 | Feb. 21, 1961 | J. McEwan | Saw sharpener | saw sharpening machines |
| 2,972,271 | Feb. 21, 1961 | M.J. Gill | Predetermined Torque Release Hand Tool | torque wrenches |
| 2,972,272 | Feb. 21, 1961 | F. Sirola | Tool post and tool holder | lathe tool holders and tool posts |
| 2,972,357 | Feb. 21, 1961 | C.S. Gladoske, R.L. Ford | Hydraulic Rotary Selector Valve | hydraulic apparatus |
| 2,972,364 | Feb. 21, 1961 | S. Standal | Saw teeth | insertable saw teeth |
| 2,972,486 | Feb. 21, 1961 | B.R. Better | Indirect Chucking | grinding fixtures |
| 2,972,487 | Feb. 21, 1961 | D.M. Blackburn | Indexing Mechanism | indexers and dividers |
