| Patents for Richard Johnstone |
Patents 1 -
15
of 36
      |
| Number | Date | Patentee | Title | Type |
| 3,882,305 | May 06, 1975 | R. Johnstone | Diagnostic communication system for computer controlled machine tools | |
| 4,109,309 | Aug. 22, 1978 | L.D. Ostby, R. Johnstone | Method and Apparatus for Remote Display of Analog Signals Occurring in Computer Controlled Machine Tools | machine tool controls |
| FR-2,380,595 | Sep. 08, 1978 | L.D. Ostby, R. Johnstone | Method and Apparatus for Remote Displaying of Analog Signals Appearing in Computer Controlled Machine Tools | machine tool controls |
| 4,120,030 | Oct. 10, 1978 | R. Johnstone | Computer Software Security System | numerically controlled milling machines |
| 4,145,816 | Mar. 27, 1979 | R. Johnstone, R.E. Stobbe | Spindle Probe With Orbital Transformer | |
| 4,164,810 | Aug. 21, 1979 | R.B. Clegg, R. Johnstone, C.B. Sipek | Automatic Tool Changer for Machine Tools | tool changers and storage mechanisms |
| 4,172,512 | Oct. 30, 1979 | R. Johnstone, R.B. Clegg | Machine Tool With Common Drive for Worktable and Pallet Shuttle | metalworking machine mechanisms |
| 4,177,550 | Dec. 11, 1979 | R.B. Clegg, R. Johnstone, C.B. Sipek | Machine Tool With Hollow Structural Steel Members | metalworking machine mechanisms |
| 4,185,376 | Jan. 29, 1980 | R. Johnstone | Unmanned Machining Center With Tool Checking | numerically controlled milling machines |
| CA-1,086,043 | Sep. 23, 1980 | R.B. Clegg, R. Johnstone | Machine tool with common drive for worktable and pallet shuttle | workpiece changers and storage mechanisms |
| CA-1,086,930 | Oct. 07, 1980 | C.B. Sipek, R.B. Clegg, R. Johnstone | Automatic tool changer for machine tool | tool changers and storage mechanisms |
| CA-1,090,108 | Nov. 25, 1980 | R. Johnstone | Unmanned machining center with tool checking | tool changers and storage mechanisms |
| CA-1,090,109 | Nov. 25, 1980 | R. Johnstone | Method of cleaning chips from a work-piece in an unmanned machining center | metalworking machine mechanisms |
| 4,238,034 | Dec. 09, 1980 | R.B. Clegg, R. Johnstone, C.B. Sipek | Automatic Tool Changer for Machine Tools | tool changers and storage mechanisms |
| 4,266,120 | May 05, 1981 | R. Johnstone | Unmanned Machining Center With Tool Checking | numerically controlled milling machines |
