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| Patents for The Sheffield Corp. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,412,421 | Dec. 10, 1946 | W.F. Aller, L.F. Polk | Gauging Device | |
 | 2,419,433 | Apr. 22, 1947 | W.F. Aller | Comparator Gauge | |
 | 2,436,528 | Feb. 24, 1948 | W.F. Aller, L.F. Polk | Screw Thread Gauge | |
 | 2,924,018 | Feb. 09, 1960 | J.H. Straw, R.A. Mahlmeister | Gaging Device | |
 | 3,197,873 | Aug. 03, 1965 | W.F. Aller | Gaging Device | |