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| Patents for Cecil W. Hopkins | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,822,348 | Sep. 08, 1931 | C.W. Hopkins | Grinding Machine | ||
| 1,825,797 | Oct. 06, 1931 | C.W. Hopkins | Grinding Machine | ||
| 1,932,969 | Oct. 31, 1933 | J.E. Caster, C.W. Hopkins | Grinding Machine | ||
| 1,938,766 | Dec. 12, 1933 | C.W. Hopkins | Grinding Machine | ||
| 1,983,853 | Dec. 11, 1934 | C.W. Hopkins | Grinding Machine | ||
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | ||
| 2,049,611 | Aug. 04, 1936 | C.W. Hopkins, R.E. Harrison | Automatic Sizing Mechanism | ||