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| Patents for Darling, Brown & Sharpe | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 105,180 | Jul. 12, 1870 | S. Darling | Process & Apparatus for Hardening Files | |
 | 222,744 | Dec. 16, 1879 | L. Sharpe | Improvement in Measuring Scales and Rules | |
 | 226,162 | Apr. 06, 1880 | S. Darling | Compensating Errors in Screw Dividing Engines | |
 | 411,741 | Sep. 24, 1889 | C.E. Dow | Protractor | |
 | 477,105 | Jun. 14, 1892 | S. Darling | Caliper Rule | |
 | 477,183 | Jun. 14, 1892 | G.D. McLane | Caliper Rule | |