| Patents Granted on 1991-04-?? |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 5,004,984 | Apr. 02, 1991 | M.M. Crass, S.S. Rameshk, T.P. Becker | Magnetic Field Pickup Assembly for Diagnositics on Specific Engine | |
| GB-2,206,301 | Apr. 03, 1991 | Z. Brierley | Drill grinding machines | drill grinders |
| 5,005,449 | Apr. 09, 1991 | D.L. Gatzemeyer, J.A. Sorensen | Hand Tool or Improved Bar Clamp | clamps |
| 5,006,193 | Apr. 09, 1991 | B.S. Quick | Automatic clamp tightener | |
| 5,007,151 | Apr. 16, 1991 | N.V. Gusching | Machine tool turret | |
| 5,010,487 | Apr. 23, 1991 | V.T. Stonehocker | Computer-Based Engine Diagnostic Method | electronic circuitry and apparatus |
| D316,512 | Apr. 30, 1991 | R.T. Pistorius | Connector for picture frames or the like | |
| 5,011,324 | Apr. 30, 1991 | G.A. Putney | Detent Structure Having a Retaining Lip with a Smooth Continuous Outer Surface Free from Stress-Concentrating Corners | |
