| Patents for Pratt & Whitney Co. |
Patents 166 -
180
of 260
      |
| Number | Date | Patentee | Title | Type |
| 1,140,326 | May 18, 1915 | B.M. Hanson | Clutch Mechanism | industrial machine clutches |
| 1,182,170 | May 09, 1916 | B.M. Hanson | Head-stock | metal lathes |
| 1,182,477 | May 09, 1916 | C.L. Grohmann, B.M. Hanson | Boring-machine | drilling and boring |
| 1,182,478 | May 09, 1916 | B.M. Hanson | Steady Rest | grinding attachments |
| 1,187,730 | Jun. 20, 1916 | B.M. Hanson | Milling-machine | milling machines |
| 1,187,920 | Jun. 20, 1916 | F. Müller | Chuck | metal lathe chucks |
| 1,191,220 | Jul. 18, 1916 | G.E. Peterson | Automatic back-rest | metal lathe accessories and attachments |
| 1,194,864 | Aug. 15, 1916 | F. Müller | Machine for making twist drills | metal lathes |
| 1,199,408 | Sep. 26, 1916 | F. Müller | Chucking device | metal lathe chucks |
| 1,200,610 | Oct. 10, 1916 | B.M. Hanson | Metal-working machine | milling machines |
| 1,202,997 | Oct. 31, 1916 | B.M. Hanson | Tail-stock | metal lathes |
| 1,211,840 | Jan. 09, 1917 | B.M. Hanson | Metal-working machine | metal lathes |
| RE14,299 | May 08, 1917 | G.E. Peterson | Automatic back-rest | metal lathe accessories and attachments |
| 1,233,994 | Jul. 17, 1917 | R.F. Dow | Machine for taper-forming | metal lathes |
| 1,237,511 | Aug. 21, 1917 | B.M. Hanson | Lathe | metal lathes |
