| Patents for Samuel Darling |
Patents 46 -
53
of 53
      |
| Number | Date | Patentee | Title | Type |
| 371,741 | Oct. 18, 1887 | S. Darling | Measuring Rule | rules |
| 376,430 | Jan. 17, 1888 | S. Darling | Protractor | protractors |
| 410,880 | Sep. 10, 1889 | S. Darling | Fire Pot for Hot Air Furnaces | |
| 442,020 | Dec. 02, 1890 | S. Darling | Vernier Scale | |
| 470,864 | Mar. 15, 1892 | S. Darling | Key Seat Rule | special purpose gauges |
| 477,104 | Jun. 14, 1892 | S. Darling | Caliper Rule | measurement gauges |
| 477,105 | Jun. 14, 1892 | S. Darling | Caliper Rule | measurement gauges |
| 552,238 | Dec. 31, 1895 | S. Darling | Screw Thread Gage | thread gages |
