| Patents Granted on 1988-12-?? |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 4,789,001 | Dec. 06, 1988 | L.W. Durham, B.S. Backe | Operating System for a Valve | |
| 4,790,233 | Dec. 13, 1988 | L.W. Durham, B.S. Backe | Method and Apparatus for Controlling Hydraulic Systems | machine tool controls |
| 4,791,834 | Dec. 20, 1988 | G.J. Federighi | Pressure metering cork extractor | non worm cork extractors |
| 4,792,267 | Dec. 20, 1988 | R.J. Warner | Carriage for Machine Tool | metalworking machine mechanisms |
| IT-1,198,335 | Dec. 21, 1988 | J. Harman | Locking Device for Setting Component in Machine Tool - Has Signal Generator Comprising Switch and Holes to Monitor Setting | metalworking machine mechanisms |
| D299,146 | Dec. 27, 1988 | H. Pollak, J.W. Mauger | Surface mounted power tool | jointers |
| 4,793,222 | Dec. 27, 1988 | A.F. Beugelsdyk | Ratcheting Tool Driver, &c. | ratcheting screwdrivers |
