| Patents for John D. Hale |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 3,031,021 | Apr. 24, 1962 | J.B. Rolfe, J.D. Hale | Magnetic Balance Indicator |
| | 3,103,390 | Sep. 10, 1963 | J.D. Hale | Scale Suspension System |
| | 3,181,635 | May 04, 1965 | J.D. Hale | Portable Weighing Scale |
| | 3,238,916 | Mar. 08, 1966 | J.D. Hale | Indicator Mechanism for Scales |
| | 3,266,583 | Aug. 16, 1966 | J.D. Hale | Scale Indicator Mechanism Controlling Container Weighing and Filling Operations |
| | 3,877,532 | Apr. 15, 1975 | J.D. Hale | Low Profile Scale |
| | 4,609,062 | Sep. 02, 1986 | H.L. Scott, J.D. Hale | Heavy-Duty Industrial Weighing Scale |
