| Patents for Pratt & Whitney Co. |
Patents 256 -
264
of 264
      |
| Number | Date | Patentee | Title | Type |
| 1,904,395 | Apr. 18, 1933 | A.G. Whitehead | Spindle Bearing | metalworking machine bearings |
| 1,918,952 | Jul. 18, 1933 | A.B. Bachmann, W. Krause | Flexible Shaft Bench Grinder | grinders |
| 1,961,605 | Jun. 05, 1934 | J.E. Lovely, N.I. Lundberg, M.E. Lange, F.O. Hoagland, A.E. Drissner | Standard Spindle Nose | metal lathe chucks |
| 1,980,336 | Nov. 13, 1934 | F.O. Hoagland | Chuck Retaining Means | metal lathe chucks |
| 2,101,177 | Dec. 07, 1937 | F.O. Hoagland | Bench Type Machine Tool | metal lathe chucks |
| 2,440,916 | May 04, 1948 | J.W. Durkee, J.M. Rusnak | Precision Measuring and Postioning Device | measuring tools |
| 2,991,558 | Jul. 11, 1961 | P. Cherkas | Air Gage Cartridge | pneumatic measuring gauges |
| 2,997,873 | Aug. 29, 1961 | A.M. Dexter, Jr. | Pneumatic Dimension Gage | pneumatic measuring gauges |
| 3,136,561 | Jun. 09, 1964 | A.D. Parone, J.F. McAuliffe | Collet for Fluted Shankless Tool | tool holding collets |
