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| Patents for Ralph M. Gamble | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,249,148 | Jul. 15, 1941 | R.M. Gamble, J.E. Lovely | Lathe | ||
| 2,451,210 | Oct. 12, 1948 | R.M. Gamble | Chuck for Automatic Machine Tools | ||
| 2,454,916 | Nov. 30, 1948 | R.M. Gamble | Machine Tool | ||
| 2,489,023 | Nov. 22, 1949 | R.M. Gamble | Lathe | ||
| 2,554,699 | May 29, 1951 | R.M. Gamble | Gripper Transfer Device | ||
| 2,562,266 | Jul. 31, 1951 | R.M. Gamble | Turret Lathe | ||
| 2,570,660 | Oct. 09, 1951 | R.M. Gamble | Transfer Mechanism | ||
| 2,592,920 | Apr. 15, 1952 | R.M. Gamble, J.E. Lovely | Lathe | ||