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| Patents for Gilbert Engineering Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,689,484 | Sep. 21, 1954 | R.D. Phares | Speed change pulley bracket support | drill presses | |
| 2,716,350 | Aug. 30, 1955 | R.D. Phares | Slow speed converter motor drive | metalworking speed changing mechanisms | |