| Patents for Orrin W. Barker |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 2,263,404 | Nov. 18, 1941 | O.W. Barker, J.B. Armitage | Boring and Milling Machine | milling machines |
| 2,275,241 | Mar. 03, 1942 | O.W. Barker, J.B. Armitage | Machine Tool Transmission and Control Mechanism | milling machines |
| 2,293,880 | Aug. 25, 1942 | O.W. Barker, J.B. Armitage | Machine Tool Transmission and Control Mechanism | milling machines |
| 2,407,913 | Sep. 17, 1946 | O.W. Barker, J.B. Armitage | Machine Tool Transmission and Control Mechanism | milling machines |
| 2,434,750 | Jan. 20, 1948 | T. Trecker, F.D. Boehmer, K.A. Riedel, O.W. Barker, J.B. Armitage | Machine Tool | milling machines |
| 2,557,405 | Jun. 19, 1951 | O.W. Barker, J.B. Armitage | Adjustable Bearing | metalworking machine mechanisms |
| 2,605,678 | Aug. 05, 1952 | O.W. Barker, J.B. Armitage | Milling and Boring Machine | milling machines |
| 2,621,566 | Dec. 16, 1952 | O.W. Barker, J.B. Armitage | Machine Tool Structure and Transmission Mechanism | milling machines |
| 2,749,811 | Jun. 12, 1956 | J.J. Lenert, O.W. Barker | Transfer Machines | milling machines |
| 2,818,002 | Dec. 31, 1957 | J.J. Lenert, O.W. Barker | Transfer Machines | milling machines |
| 2,835,172 | May 20, 1958 | L.D. Libby, R.E. Saving, O.W. Barker | Rotary Head Milling Attachment | milling machine accessories |
| 2,952,190 | Sep. 13, 1960 | O.W. Barker | Backlash Eliminator | milling machines |
| 2,963,945 | Dec. 13, 1960 | F. Zankl, J.G. Osburn, J.L. Martin, O.W. Barker | Transmission and Control Mechanism | metalworking power transmission |
