| Y/M/D | Description | Place |
|---|---|---|
| 1785/00/00 | Oliver Evans invents the Automatic Flour Mill which, according to Evans' own calculations, can reduce costs by 50 percent. | |
| 1789/00/00 | Ellicotts are among the first merchant millers in the country to adopt the Oliver Evans patented system of mill automation. | Ellicott's Mills Historic District, Oella |
| 1790/00/00 | In 1790, upon introduction of federal patent law, Oliver Evans applies for protection for his automatic milling designs. | |
| 1790/00/00 | Secretary of State Thomas Jefferson personally examines and approves Oliver Evans patent for an Automatic Flour Mill. | |
| 1790/00/00 | After Attorney-General Edmund Randolph personally examines Oliver Evans application, Mr Evans is granted United States Patent No 3. | |
| 1790/00/00 | Secretary of War Henry Knox approves Oliver Evans patent for an Automatic Flour Mill. | |
| 1791/00/00 | Oliver Evans' two brothers install an Evans system to automate Washington's gristmill, fall of 1791 | George Washington's Distillery and Gristmill, Mt Vernon, VA |
As an Amazon Associate I earn from qualifying purchases.