| All Patents in class 248/631 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 4,988,244 | Jan. 29, 1991 | E.E. Kirkham, P.C. Sheldon | Six Axis Machine Tool | milling machines |
| 5,028,180 | Jul. 02, 1991 | E.E. Kirkham, P.C. Sheldon | Six-Axis Machine Tool | numerically controlled milling machines |
| 5,354,158 | Oct. 11, 1994 | B.P. Konkel, L.D. Ostby, E.E. Kirkham, P.C. Sheldon | Six Axis Machine Tool | milling machines |
| 5,388,935 | Feb. 14, 1995 | P.C. Sheldon | Six Axis Machine Tool | milling machines |
| 5,489,168 | Feb. 06, 1996 | B.P. Konkel, L.D. Ostby, E.E. Kirkham, P.C. Sheldon | Metrology Instrument Arm System | metalworking machine mechanisms |
| 5,538,373 | Jul. 23, 1996 | E.E. Kirkham | Machine Tool Vibration Isolation System | metalworking machine mechanisms |
